Finding the Fourth Proportional to 9,347,688.72, 12,901,962.72 and 5,481,455.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,347,688.72 : 12,901,962.72 = 5,481,455.40 : x
2. Step 2: Convert to fraction form
   9,347,688.72/12,901,962.72 = 5,481,455.40/x
3. Step 3: Cross multiply
   9,347,688.72x = 12,901,962.72 × 5,481,455.40
4. Step 4: Simplify right side
   9,347,688.72x = 70,721,533,222,142.70
5. Step 5: Solve for x
   x = 70,721,533,222,142.70/9,347,688.72
6. Step 6: Final answer
   x = 7,565,670.55