Step 1:
The first step to converting 4251543.9981253 to a fraction is to re-write 4251543.9981253 in the form p/q where p and q are both positive integers. To start with, 4251543.9981253 can be written as simply 4251543.9981253/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 4251543.9981253, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 4251543.9981253/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 4251543.9981253/1 each by 10000000:
Step 3:
Now the last step is to simplify the fraction (if possible) by finding similar factors and cancelling them out, which leads to the following answer for 4251543.9981253 as a fraction:
4251543/1 / 1