Finding the Fourth Proportional to 4,086.24, 6,131.69 and 3,401.21

Step by Step Solution

1. Step 1: Write the proportion equation
   4,086.24 : 6,131.69 = 3,401.21 : x
2. Step 2: Convert to fraction form
   4,086.24/6,131.69 = 3,401.21/x
3. Step 3: Cross multiply
   4,086.24x = 6,131.69 × 3,401.21
4. Step 4: Simplify right side
   4,086.24x = 20,855,165.34
5. Step 5: Solve for x
   x = 20,855,165.34/4,086.24
6. Step 6: Final answer
   x = 5,103.75