Finding the Fourth Proportional to 5,391.43, 8,086.61 and 1,693.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,391.43 : 8,086.61 = 1,693.56 : x
2. Step 2: Convert to fraction form
   5,391.43/8,086.61 = 1,693.56/x
3. Step 3: Cross multiply
   5,391.43x = 8,086.61 × 1,693.56
4. Step 4: Simplify right side
   5,391.43x = 13,695,138.78
5. Step 5: Solve for x
   x = 13,695,138.78/5,391.43
6. Step 6: Final answer
   x = 2,540.17