Finding the Fourth Proportional to 8,255.58, 12,391.20 and 5,126.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,255.58 : 12,391.20 = 5,126.10 : x
2. Step 2: Convert to fraction form
   8,255.58/12,391.20 = 5,126.10/x
3. Step 3: Cross multiply
   8,255.58x = 12,391.20 × 5,126.10
4. Step 4: Simplify right side
   8,255.58x = 63,518,530.32
5. Step 5: Solve for x
   x = 63,518,530.32/8,255.58
6. Step 6: Final answer
   x = 7,694.01