Step 1:
The first step to converting 12413.780000008 to a fraction is to re-write 12413.780000008 in the form p/q where p and q are both positive integers. To start with, 12413.780000008 can be written as simply 12413.780000008/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 12413.780000008, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 12413.780000008/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 12413.780000008/1 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 12413.780000008 as a fraction:
111724/9 / 1