Step 1:
The first step to converting 12910396.215888 to a fraction is to re-write 12910396.215888 in the form p/q where p and q are both positive integers. To start with, 12910396.215888 can be written as simply 12910396.215888/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 12910396.215888, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 12910396.215888/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 12910396.215888/1 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 12910396.215888 as a fraction:
12910396/1 / 1