Finding the Fourth Proportional to 5,401.38, 8,101.32 and 2,116.76

Step by Step Solution

1. Step 1: Write the proportion equation
   5,401.38 : 8,101.32 = 2,116.76 : x
2. Step 2: Convert to fraction form
   5,401.38/8,101.32 = 2,116.76/x
3. Step 3: Cross multiply
   5,401.38x = 8,101.32 × 2,116.76
4. Step 4: Simplify right side
   5,401.38x = 17,148,550.12
5. Step 5: Solve for x
   x = 17,148,550.12/5,401.38
6. Step 6: Final answer
   x = 3,174.85