Finding the Fourth Proportional to 8,178.96, 12,272.24 and 3,500.40

Step by Step Solution

1. Step 1: Write the proportion equation
   8,178.96 : 12,272.24 = 3,500.40 : x
2. Step 2: Convert to fraction form
   8,178.96/12,272.24 = 3,500.40/x
3. Step 3: Cross multiply
   8,178.96x = 12,272.24 × 3,500.40
4. Step 4: Simplify right side
   8,178.96x = 42,957,748.90
5. Step 5: Solve for x
   x = 42,957,748.90/8,178.96
6. Step 6: Final answer
   x = 5,252.23