Ellen borrows $29, 400 for 14 years at a 7% effective annual rate She pays interest yearly and will repay the principal by making 14 annual payments into a sinking fund The first interest and sinking fund payments will be made at the end of the first year Ellen's sinking fund payments will start at $2100 and will decrease by $150 each year The final payment will include an additional amount The sinking fund will earn interest at a 5% effective annual rate for the first 10 years and will earn interest at a 6% effective annual rate after the first 10 years Determine the total amount of Ellen's final sinking fund payment