Finding the Fourth Proportional to 12,142.29, 18,211.92 and 3,377.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,142.29 : 18,211.92 = 3,377.89 : x
2. Step 2: Convert to fraction form
   12,142.29/18,211.92 = 3,377.89/x
3. Step 3: Cross multiply
   12,142.29x = 18,211.92 × 3,377.89
4. Step 4: Simplify right side
   12,142.29x = 61,517,862.45
5. Step 5: Solve for x
   x = 61,517,862.45/12,142.29
6. Step 6: Final answer
   x = 5,066.41