would love some help please

Suppose Wacken, Limited just issued a dividend of $2.64 per share on its common stock. The company paid dividends of $2.14. $2.21,$2.38, and $2.48 per share in the last four years. If the stock currently sells for $83, what is your best estimate of the company's cost of equity capital using arithmetic and geometric growth rates? Note: Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16