please give me answer in proper detail and notes

IBL project requires an investment of $15,900 and has an expected life of 5 years. Ignore tax. Annual cash flows at the end of each year are as follows: Year 1 2 3 4 5 Economic growth Inflation Rate Risk Premium Amount in $ 4,000 6,200 4,000 2,000 6,100 2.5% 4% 1.8% REQUIRED 1. Compute the payback period 2. Find the discounted Payback Period 3. What is the Net Present Value and the Profitability index. 4. Find the IRR of this project. Is it profitable