Finding the Fourth Proportional to 10,932.72, 16,400.16 and 3,142.68

Step by Step Solution

1. Step 1: Write the proportion equation
   10,932.72 : 16,400.16 = 3,142.68 : x
2. Step 2: Convert to fraction form
   10,932.72/16,400.16 = 3,142.68/x
3. Step 3: Cross multiply
   10,932.72x = 16,400.16 × 3,142.68
4. Step 4: Simplify right side
   10,932.72x = 51,540,454.83
5. Step 5: Solve for x
   x = 51,540,454.83/10,932.72
6. Step 6: Final answer
   x = 4,714.33