Finding the Fourth Proportional to 4,086.42, 5,638.42 and 2,317.56

Step by Step Solution

1. Step 1: Write the proportion equation
   4,086.42 : 5,638.42 = 2,317.56 : x
2. Step 2: Convert to fraction form
   4,086.42/5,638.42 = 2,317.56/x
3. Step 3: Cross multiply
   4,086.42x = 5,638.42 × 2,317.56
4. Step 4: Simplify right side
   4,086.42x = 13,067,336.88
5. Step 5: Solve for x
   x = 13,067,336.88/4,086.42
6. Step 6: Final answer
   x = 3,197.75