Find WACC and please don't use excel, use formulas and calculations!

15. Finding the WACC [@ LO3] Given the following information for Lightning Power Co., find the WACC. Assume the company's tax rate is 21 percent. Debt: 12,000 bonds with a 4.6 percent coupon outstanding, $1,000 par value, 25 years to maturity, selling for 105 percent of par; the bonds make semiannual payments. Common 575,000 shares outstanding, selling for $81 per share; the beta is 1.04 . stock: Page 497