Finding the Fourth Proportional to 5,456.60, 8,171.94 and 3,892.76

Step by Step Solution

1. Step 1: Write the proportion equation
   5,456.60 : 8,171.94 = 3,892.76 : x
2. Step 2: Convert to fraction form
   5,456.60/8,171.94 = 3,892.76/x
3. Step 3: Cross multiply
   5,456.60x = 8,171.94 × 3,892.76
4. Step 4: Simplify right side
   5,456.60x = 31,811,401.15
5. Step 5: Solve for x
   x = 31,811,401.15/5,456.60
6. Step 6: Final answer
   x = 5,829.89