Finding the Fourth Proportional to 10,935.77, 16,404.15 and 3,540.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,935.77 : 16,404.15 = 3,540.80 : x
2. Step 2: Convert to fraction form
   10,935.77/16,404.15 = 3,540.80/x
3. Step 3: Cross multiply
   10,935.77x = 16,404.15 × 3,540.80
4. Step 4: Simplify right side
   10,935.77x = 58,083,868.61
5. Step 5: Solve for x
   x = 58,083,868.61/10,935.77
6. Step 6: Final answer
   x = 5,311.37