Answer:
the answer is 21,378.6
Explanation:
this is not hard, In this case, the exponent is positive, which means we need to move the decimal point to the right. Specifically, we need to move it four places to the right, since the exponent is 4.
So, starting with 2.13786 x 10^4, we move the decimal point four places to the right to get: 21,378.6