Step 1:
The first step to converting 12346.216890581 to a fraction is to re-write 12346.216890581 in the form p/q where p and q are both positive integers. To start with, 12346.216890581 can be written as simply 12346.216890581/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 12346.216890581, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 12346.216890581/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 12346.216890581/1 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 12346.216890581 as a fraction:
111116/9 / 1