Finding the Fourth Proportional to 8,255.32, 12,353.40 and 7,148.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,255.32 : 12,353.40 = 7,148.56 : x
2. Step 2: Convert to fraction form
   8,255.32/12,353.40 = 7,148.56/x
3. Step 3: Cross multiply
   8,255.32x = 12,353.40 × 7,148.56
4. Step 4: Simplify right side
   8,255.32x = 88,309,021.10
5. Step 5: Solve for x
   x = 88,309,021.10/8,255.32
6. Step 6: Final answer
   x = 10,697.23