Finding the Fourth Proportional to 8,151.42, 12,228.78 and 3,471.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,151.42 : 12,228.78 = 3,471.42 : x
2. Step 2: Convert to fraction form
   8,151.42/12,228.78 = 3,471.42/x
3. Step 3: Cross multiply
   8,151.42x = 12,228.78 × 3,471.42
4. Step 4: Simplify right side
   8,151.42x = 42,451,231.47
5. Step 5: Solve for x
   x = 42,451,231.47/8,151.42
6. Step 6: Final answer
   x = 5,207.83