hello. please help me with this solution. Both the numerical solution as well as explanation of the logic followed to reach to the solution is required.( please dont put only numerical plz explain also)

Please calculate the weighted average cost of capital for a firm having a capital structure consisting of 40% debt, 10% preferred stock and 50% equity.

Assume further that debt bears an interest of 8%, that preferred stock pays an $8 dividend and is priced at $100 (its par value), and that common stock sells for $55, paying a dividend of $2.20.

Finally, assume that the expected growth rate of earnings and dividends is 9%, and that the firm's effective tax rate is 34%.