WASHINGTON, Oct 12 (Reuters) - Ukrainian President Volodymyr Zelenskiy on Wednesday appealed to international donors to increase their financial support, saying more money was needed to rebuild schools and homes destroyed by months of Russian bombardment.Zelenskiy, speaking by video link to finance ministers at the World Bank and International Monetary Fund annual meetings in Washington, said Ukraine needed about $55 billion - $38 billion to cover next year's estimated budget deficit, and another $17 billion to start to rebuild critical infrastructure, including schools, housing and energy facilities.Georgieva said the IMF estimated that Ukraine would need $3 billion to $4 billion in external financing help per month next year - and possibly more - to keep its economy running as the Russian invasion that began in February drags on.But risks remained "exceedingly high", as demonstrated by Russian missile attacks on Ukraine this week, and high levels of external help would remain necessary to cover ongoing budget costs and initial infrastructure repairs, Georgieva said.Georgieva said the IMF planned to work with the Ukrainian authorities to set up a new "Ukraine Economic Forum" suggested by Zelenskiy to share information, calibrate financing needs and coordinate macroeconomic developments and policies."