Finding the Fourth Proportional to 12,143.31, 16,757.83 and 7,106.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,143.31 : 16,757.83 = 7,106.55 : x
2. Step 2: Convert to fraction form
   12,143.31/16,757.83 = 7,106.55/x
3. Step 3: Cross multiply
   12,143.31x = 16,757.83 × 7,106.55
4. Step 4: Simplify right side
   12,143.31x = 119,090,356.79
5. Step 5: Solve for x
   x = 119,090,356.79/12,143.31
6. Step 6: Final answer
   x = 9,807.08