Finding the Fourth Proportional to 11,711.56, 16,155.84 and 7,934.98

Step by Step Solution

1. Step 1: Write the proportion equation
   11,711.56 : 16,155.84 = 7,934.98 : x
2. Step 2: Convert to fraction form
   11,711.56/16,155.84 = 7,934.98/x
3. Step 3: Cross multiply
   11,711.56x = 16,155.84 × 7,934.98
4. Step 4: Simplify right side
   11,711.56x = 128,196,267.28
5. Step 5: Solve for x
   x = 128,196,267.28/11,711.56
6. Step 6: Final answer
   x = 10,946.13