Finding the Fourth Proportional to 8,274.50, 12,411.82 and 2,431.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,274.50 : 12,411.82 = 2,431.20 : x
2. Step 2: Convert to fraction form
   8,274.50/12,411.82 = 2,431.20/x
3. Step 3: Cross multiply
   8,274.50x = 12,411.82 × 2,431.20
4. Step 4: Simplify right side
   8,274.50x = 30,175,616.78
5. Step 5: Solve for x
   x = 30,175,616.78/8,274.50
6. Step 6: Final answer
   x = 3,646.82