Finding the Fourth Proportional to 12,172,452.71, 18,229,698.88 and 7,044,072.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,172,452.71 : 18,229,698.88 = 7,044,072.17 : x
2. Step 2: Convert to fraction form
   12,172,452.71/18,229,698.88 = 7,044,072.17/x
3. Step 3: Cross multiply
   12,172,452.71x = 18,229,698.88 × 7,044,072.17
4. Step 4: Simplify right side
   12,172,452.71x = 128,411,314,548,088.16
5. Step 5: Solve for x
   x = 128,411,314,548,088.16/12,172,452.71
6. Step 6: Final answer
   x = 10,549,337.72