Finding the Fourth Proportional to 5,401.86, 7,455.51 and 3,411.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,401.86 : 7,455.51 = 3,411.78 : x
2. Step 2: Convert to fraction form
   5,401.86/7,455.51 = 3,411.78/x
3. Step 3: Cross multiply
   5,401.86x = 7,455.51 × 3,411.78
4. Step 4: Simplify right side
   5,401.86x = 25,436,559.91
5. Step 5: Solve for x
   x = 25,436,559.91/5,401.86
6. Step 6: Final answer
   x = 4,708.85