Finding the Fourth Proportional to 8,714.72, 12,029.40 and 5,177.91

Step by Step Solution

1. Step 1: Write the proportion equation
   8,714.72 : 12,029.40 = 5,177.91 : x
2. Step 2: Convert to fraction form
   8,714.72/12,029.40 = 5,177.91/x
3. Step 3: Cross multiply
   8,714.72x = 12,029.40 × 5,177.91
4. Step 4: Simplify right side
   8,714.72x = 62,287,150.55
5. Step 5: Solve for x
   x = 62,287,150.55/8,714.72
6. Step 6: Final answer
   x = 7,147.35