Answer:
It would be $ 635.62.
Explanation:
Since, when an amount is increasing compound continuously,
Then the amount after t years,

Where P is the principal amount,
r is the annual rate,
Here, P = $ 500,
r = 6 % = 0.06,
t = 4 years,
Thus, the amount after 4 years,



Hence, $500 would be $ 635.62 after 4 years with the rate of 6% compounded continuously.