Finding the Fourth Proportional to 10,937.78, 16,403.23 and 3,540.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,937.78 : 16,403.23 = 3,540.71 : x
2. Step 2: Convert to fraction form
   10,937.78/16,403.23 = 3,540.71/x
3. Step 3: Cross multiply
   10,937.78x = 16,403.23 × 3,540.71
4. Step 4: Simplify right side
   10,937.78x = 58,079,135.89
5. Step 5: Solve for x
   x = 58,079,135.89/10,937.78
6. Step 6: Final answer
   x = 5,309.95