Finding the Fourth Proportional to 12,906,387.13, 19,359,448.56 and 3,321,728.41

Step by Step Solution

1. Step 1: Write the proportion equation
   12,906,387.13 : 19,359,448.56 = 3,321,728.41 : x
2. Step 2: Convert to fraction form
   12,906,387.13/19,359,448.56 = 3,321,728.41/x
3. Step 3: Cross multiply
   12,906,387.13x = 19,359,448.56 × 3,321,728.41
4. Step 4: Simplify right side
   12,906,387.13x = 64,306,830,283,685.59
5. Step 5: Solve for x
   x = 64,306,830,283,685.59/12,906,387.13
6. Step 6: Final answer
   x = 4,982,558.61