Finding the Fourth Proportional to 22,711.14, 34,072.18 and 7,128.76

Step by Step Solution

1. Step 1: Write the proportion equation
   22,711.14 : 34,072.18 = 7,128.76 : x
2. Step 2: Convert to fraction form
   22,711.14/34,072.18 = 7,128.76/x
3. Step 3: Cross multiply
   22,711.14x = 34,072.18 × 7,128.76
4. Step 4: Simplify right side
   22,711.14x = 242,892,393.90
5. Step 5: Solve for x
   x = 242,892,393.90/22,711.14
6. Step 6: Final answer
   x = 10,694.86