Identify decimal place: Identify the sixth decimal place to determine how to round the fifth decimal place.The number given is 8.3878652529. To round to five decimal places, we look at the sixth decimal place, which is 5.
Apply rounding rule: Apply the rounding rule.Since the sixth decimal place is 5, we round up the fifth decimal place from 2 to 3.
Write final rounded number: Write the final rounded number.The number 8.3878652529 rounded to five decimal places is 8.38787.