You have won a contest. Your prize consists of 5 payments of $10,000 made at the end of years 2, 4, 6, 8 and 10 (assume that "right now" equals time zero), or a one-time lump-sum cash payment made at time zero. You have a 12% discount rate. What lump-sum cash payment at time zero is economically equivalent to the sequence of 5 payments of $10,000?