Suppose Wacken, Limited just issued a dividend of $$2\mathrm{.}62$ per share on its common stock. The company paid dividends of $$2\mathrm{.}12,$ $$2\mathrm{.}19,$ $$2\mathrm{.}36,$ and $$2\mathrm{.}46$ per share in the last four years. If the stock currently sells for $$81,$ what is your best estimate of the company$$s cost of equity capital using arithmetic and geometric growth rates?