Finding the Fourth Proportional to 3,882.86, 5,357.31 and 2,486.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,882.86 : 5,357.31 = 2,486.42 : x
2. Step 2: Convert to fraction form
   3,882.86/5,357.31 = 2,486.42/x
3. Step 3: Cross multiply
   3,882.86x = 5,357.31 × 2,486.42
4. Step 4: Simplify right side
   3,882.86x = 13,320,522.73
5. Step 5: Solve for x
   x = 13,320,522.73/3,882.86
6. Step 6: Final answer
   x = 3,430.60