Finding the Fourth Proportional to 4,086.48, 5,639.15 and 2,317.88

Step by Step Solution

1. Step 1: Write the proportion equation
   4,086.48 : 5,639.15 = 2,317.88 : x
2. Step 2: Convert to fraction form
   4,086.48/5,639.15 = 2,317.88/x
3. Step 3: Cross multiply
   4,086.48x = 5,639.15 × 2,317.88
4. Step 4: Simplify right side
   4,086.48x = 13,070,892.89
5. Step 5: Solve for x
   x = 13,070,892.89/4,086.48
6. Step 6: Final answer
   x = 3,198.57