Finding the Fourth Proportional to 12,109, 16,711.86 and 7,926.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,109 : 16,711.86 = 7,926.52 : x
2. Step 2: Convert to fraction form
   12,109/16,711.86 = 7,926.52/x
3. Step 3: Cross multiply
   12,109x = 16,711.86 × 7,926.52
4. Step 4: Simplify right side
   12,109x = 132,466,892.53
5. Step 5: Solve for x
   x = 132,466,892.53/12,109
6. Step 6: Final answer
   x = 10,939.54