Step 1:
The first step to converting 12510.421709353 to a fraction is to re-write 12510.421709353 in the form p/q where p and q are both positive integers. To start with, 12510.421709353 can be written as simply 12510.421709353/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 12510.421709353, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 12510.421709353/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 12510.421709353/1 each by 1000000000:
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 12510.421709353 as a fraction:
87573/7 / 1