Step 1:
The first step to converting 12902.840940852 to a fraction is to re-write 12902.840940852 in the form p/q where p and q are both positive integers. To start with, 12902.840940852 can be written as simply 12902.840940852/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 12902.840940852, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 12902.840940852/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 12902.840940852/1 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 12902.840940852 as a fraction:
77417/6 / 1