Finding the Fourth Proportional to 9,105.72, 12,565.77 and 5,126.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,105.72 : 12,565.77 = 5,126.88 : x
2. Step 2: Convert to fraction form
   9,105.72/12,565.77 = 5,126.88/x
3. Step 3: Cross multiply
   9,105.72x = 12,565.77 × 5,126.88
4. Step 4: Simplify right side
   9,105.72x = 64,423,194.90
5. Step 5: Solve for x
   x = 64,423,194.90/9,105.72
6. Step 6: Final answer
   x = 7,075.02