Finding the Fourth Proportional to 12,134.18, 16,747.89 and 7,940

Step by Step Solution

1. Step 1: Write the proportion equation
   12,134.18 : 16,747.89 = 7,940 : x
2. Step 2: Convert to fraction form
   12,134.18/16,747.89 = 7,940/x
3. Step 3: Cross multiply
   12,134.18x = 16,747.89 × 7,940
4. Step 4: Simplify right side
   12,134.18x = 132,978,246.60
5. Step 5: Solve for x
   x = 132,978,246.60/12,134.18
6. Step 6: Final answer
   x = 10,958.98