Finding the Fourth Proportional to 12,142.18, 16,758.70 and 7,662.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,142.18 : 16,758.70 = 7,662.92 : x
2. Step 2: Convert to fraction form
   12,142.18/16,758.70 = 7,662.92/x
3. Step 3: Cross multiply
   12,142.18x = 16,758.70 × 7,662.92
4. Step 4: Simplify right side
   12,142.18x = 128,420,600.14
5. Step 5: Solve for x
   x = 128,420,600.14/12,142.18
6. Step 6: Final answer
   x = 10,576.41