Finding the Fourth Proportional to 3,899.20, 5,380.42 and 2,327

Step by Step Solution

1. Step 1: Write the proportion equation
   3,899.20 : 5,380.42 = 2,327 : x
2. Step 2: Convert to fraction form
   3,899.20/5,380.42 = 2,327/x
3. Step 3: Cross multiply
   3,899.20x = 5,380.42 × 2,327
4. Step 4: Simplify right side
   3,899.20x = 12,520,237.34
5. Step 5: Solve for x
   x = 12,520,237.34/3,899.20
6. Step 6: Final answer
   x = 3,210.98