Finding the Fourth Proportional to 8,154.38, 12,229.89 and 5,151.51

Step by Step Solution

1. Step 1: Write the proportion equation
   8,154.38 : 12,229.89 = 5,151.51 : x
2. Step 2: Convert to fraction form
   8,154.38/12,229.89 = 5,151.51/x
3. Step 3: Cross multiply
   8,154.38x = 12,229.89 × 5,151.51
4. Step 4: Simplify right side
   8,154.38x = 63,002,381.32
5. Step 5: Solve for x
   x = 63,002,381.32/8,154.38
6. Step 6: Final answer
   x = 7,726.20