Finding the Fourth Proportional to 8,155.28, 12,237.56 and 3,474.80

Step by Step Solution

1. Step 1: Write the proportion equation
   8,155.28 : 12,237.56 = 3,474.80 : x
2. Step 2: Convert to fraction form
   8,155.28/12,237.56 = 3,474.80/x
3. Step 3: Cross multiply
   8,155.28x = 12,237.56 × 3,474.80
4. Step 4: Simplify right side
   8,155.28x = 42,522,994.93
5. Step 5: Solve for x
   x = 42,522,994.93/8,155.28
6. Step 6: Final answer
   x = 5,214.17