Finding the Fourth Proportional to 9,105.31, 12,565.35 and 5,126.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,105.31 : 12,565.35 = 5,126.48 : x
2. Step 2: Convert to fraction form
   9,105.31/12,565.35 = 5,126.48/x
3. Step 3: Cross multiply
   9,105.31x = 12,565.35 × 5,126.48
4. Step 4: Simplify right side
   9,105.31x = 64,416,015.47
5. Step 5: Solve for x
   x = 64,416,015.47/9,105.31
6. Step 6: Final answer
   x = 7,074.55