Finding the Fourth Proportional to 9,100.28, 12,520.83 and 7,107.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,100.28 : 12,520.83 = 7,107.38 : x
2. Step 2: Convert to fraction form
   9,100.28/12,520.83 = 7,107.38/x
3. Step 3: Cross multiply
   9,100.28x = 12,520.83 × 7,107.38
4. Step 4: Simplify right side
   9,100.28x = 88,990,267.75
5. Step 5: Solve for x
   x = 88,990,267.75/9,100.28
6. Step 6: Final answer
   x = 9,778.85