Finding the Fourth Proportional to 9,105.55, 12,565.70 and 5,126.73

Step by Step Solution

1. Step 1: Write the proportion equation
   9,105.55 : 12,565.70 = 5,126.73 : x
2. Step 2: Convert to fraction form
   9,105.55/12,565.70 = 5,126.73/x
3. Step 3: Cross multiply
   9,105.55x = 12,565.70 × 5,126.73
4. Step 4: Simplify right side
   9,105.55x = 64,420,897.63
5. Step 5: Solve for x
   x = 64,420,897.63/9,105.55
6. Step 6: Final answer
   x = 7,074.91