Finding the Fourth Proportional to 12,439,248.48, 18,658,872.72 and 7,116,732

Step by Step Solution

1. Step 1: Write the proportion equation
   12,439,248.48 : 18,658,872.72 = 7,116,732 : x
2. Step 2: Convert to fraction form
   12,439,248.48/18,658,872.72 = 7,116,732/x
3. Step 3: Cross multiply
   12,439,248.48x = 18,658,872.72 × 7,116,732
4. Step 4: Simplify right side
   12,439,248.48x = 132,790,196,570,351.03
5. Step 5: Solve for x
   x = 132,790,196,570,351.03/12,439,248.48
6. Step 6: Final answer
   x = 10,675,098.00