Finding the Fourth Proportional to 8,155.80, 12,238.30 and 3,475.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,155.80 : 12,238.30 = 3,475.32 : x
2. Step 2: Convert to fraction form
   8,155.80/12,238.30 = 3,475.32/x
3. Step 3: Cross multiply
   8,155.80x = 12,238.30 × 3,475.32
4. Step 4: Simplify right side
   8,155.80x = 42,532,008.76
5. Step 5: Solve for x
   x = 42,532,008.76/8,155.80
6. Step 6: Final answer
   x = 5,214.94