Finding the Fourth Proportional to 8,151.72, 12,228.10 and 2,308.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,151.72 : 12,228.10 = 2,308.78 : x
2. Step 2: Convert to fraction form
   8,151.72/12,228.10 = 2,308.78/x
3. Step 3: Cross multiply
   8,151.72x = 12,228.10 × 2,308.78
4. Step 4: Simplify right side
   8,151.72x = 28,231,992.72
5. Step 5: Solve for x
   x = 28,231,992.72/8,151.72
6. Step 6: Final answer
   x = 3,463.32