Finding the Fourth Proportional to 12,168.72, 18,254.16 and 3,403.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,168.72 : 18,254.16 = 3,403.71 : x
2. Step 2: Convert to fraction form
   12,168.72/18,254.16 = 3,403.71/x
3. Step 3: Cross multiply
   12,168.72x = 18,254.16 × 3,403.71
4. Step 4: Simplify right side
   12,168.72x = 62,131,866.93
5. Step 5: Solve for x
   x = 62,131,866.93/12,168.72
6. Step 6: Final answer
   x = 5,105.87