Finding the Fourth Proportional to 11,458.74, 15,820.20 and 8,800.86

Step by Step Solution

1. Step 1: Write the proportion equation
   11,458.74 : 15,820.20 = 8,800.86 : x
2. Step 2: Convert to fraction form
   11,458.74/15,820.20 = 8,800.86/x
3. Step 3: Cross multiply
   11,458.74x = 15,820.20 × 8,800.86
4. Step 4: Simplify right side
   11,458.74x = 139,231,365.37
5. Step 5: Solve for x
   x = 139,231,365.37/11,458.74
6. Step 6: Final answer
   x = 12,150.67