Finding the Fourth Proportional to 8,256.38, 12,373.60 and 7,155.58

Step by Step Solution

1. Step 1: Write the proportion equation
   8,256.38 : 12,373.60 = 7,155.58 : x
2. Step 2: Convert to fraction form
   8,256.38/12,373.60 = 7,155.58/x
3. Step 3: Cross multiply
   8,256.38x = 12,373.60 × 7,155.58
4. Step 4: Simplify right side
   8,256.38x = 88,540,284.69
5. Step 5: Solve for x
   x = 88,540,284.69/8,256.38
6. Step 6: Final answer
   x = 10,723.86