Finding the Fourth Proportional to 12,142.71, 18,211.64 and 3,375.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,142.71 : 18,211.64 = 3,375.27 : x
2. Step 2: Convert to fraction form
   12,142.71/18,211.64 = 3,375.27/x
3. Step 3: Cross multiply
   12,142.71x = 18,211.64 × 3,375.27
4. Step 4: Simplify right side
   12,142.71x = 61,469,185.27
5. Step 5: Solve for x
   x = 61,469,185.27/12,142.71
6. Step 6: Final answer
   x = 5,062.23