The correct answer to the following question is WACC= 4.55%. Please explain with full details & thank you:

2. A company has a market value of equity of $3,200,000 and one million shares outstanding. The company also has issued bonds with a face value of $2 million. The bonds have a coupon rate of 4% p.a. and coupons are paid every six months. A coupon was just paid today. The bonds were issued five years ago and have a maturity date in exactly nine years' time. The company has a beta of 0.6, the current yield on the bonds is 3% p.a., the return on the market portfolio is 9%, the risk-free return is 2% p.a. and the company tax rate is 30%. What is the company's weighted average cost of capital (WACC)