how to get the answer by hand

. Question 8 1 out of 1 points A firm with a 13.5 percent cost of capital is considering a project for this year's capital budget. The project's expected after-tax cash flows are as follows: Year: Cash flow: 1 0 -$12,000 $5,500 2 $4,700 3 $4,300 4 $4,100 Calculate the project's internal rate of return (IRR). Selected Answer: Ob. 21.45% Answers: 55.00% 21.45% c. 15.88% d. 11.58% e. 15.01%