You are in negotiations to make a 9-year loan of $50,000 to GreenWise Corporation. To repay you, GreenWive will pay $15,000 at the end of Year 1, \$10,000 at the end of Year 2, and $5,000 at the end of Year 3, plus a fixed eash flow of $X, at the end of cach year from Year 4 through Year 9 . If the appropriate rate of return is 10%, what cash flow must the investment provide at the end of each of the years from 4 to 9 , that is, what is $X