Finding the Fourth Proportional to 8,753,763.72, 12,078,066.42 and 5,131,391.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,753,763.72 : 12,078,066.42 = 5,131,391.88 : x
2. Step 2: Convert to fraction form
   8,753,763.72/12,078,066.42 = 5,131,391.88/x
3. Step 3: Cross multiply
   8,753,763.72x = 12,078,066.42 × 5,131,391.88
4. Step 4: Simplify right side
   8,753,763.72x = 61,977,291,953,688.66
5. Step 5: Solve for x
   x = 61,977,291,953,688.66/8,753,763.72
6. Step 6: Final answer
   x = 7,080,073.66