Finding the Fourth Proportional to 12,400.56, 17,105.58 and 8,152.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,400.56 : 17,105.58 = 8,152.38 : x
2. Step 2: Convert to fraction form
   12,400.56/17,105.58 = 8,152.38/x
3. Step 3: Cross multiply
   12,400.56x = 17,105.58 × 8,152.38
4. Step 4: Simplify right side
   12,400.56x = 139,451,188.28
5. Step 5: Solve for x
   x = 139,451,188.28/12,400.56
6. Step 6: Final answer
   x = 11,245.56