Finding the Fourth Proportional to 9,105.59, 12,565.69 and 5,127.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,105.59 : 12,565.69 = 5,127.98 : x
2. Step 2: Convert to fraction form
   9,105.59/12,565.69 = 5,127.98/x
3. Step 3: Cross multiply
   9,105.59x = 12,565.69 × 5,127.98
4. Step 4: Simplify right side
   9,105.59x = 64,436,531.36
5. Step 5: Solve for x
   x = 64,436,531.36/9,105.59
6. Step 6: Final answer
   x = 7,076.59