Finding the Fourth Proportional to 9,354,564.72, 12,909,038.04 and 5,280,562.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,354,564.72 : 12,909,038.04 = 5,280,562.80 : x
2. Step 2: Convert to fraction form
   9,354,564.72/12,909,038.04 = 5,280,562.80/x
3. Step 3: Cross multiply
   9,354,564.72x = 12,909,038.04 × 5,280,562.80
4. Step 4: Simplify right side
   9,354,564.72x = 68,166,986,057,808.91
5. Step 5: Solve for x
   x = 68,166,986,057,808.91/9,354,564.72
6. Step 6: Final answer
   x = 7,287,029.18