I am trying to calculate skewness and the coefficient but keep getting different numbers. the mean is 37,292 the median is 41,400 and the standard...

I am trying to calculate skewness and the coefficient but keep getting different numbers.

the mean is 37,292

the median is 41,400

and the standard deviation is 23,459...

I am supposed to get -0.93 as the skewness but keep getting -0.45.

please advise.