Step 1:
The first step to converting 11780591.216812 to a fraction is to re-write 11780591.216812 in the form p/q where p and q are both positive integers. To start with, 11780591.216812 can be written as simply 11780591.216812/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 11780591.216812, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 11780591.216812/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 11780591.216812/1 each by 1000000:
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 11780591.216812 as a fraction:
11780591/1 / 1