Finding the Fourth Proportional to 3,819.88, 5,272.56 and 2,493.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,819.88 : 5,272.56 = 2,493.78 : x
2. Step 2: Convert to fraction form
   3,819.88/5,272.56 = 2,493.78/x
3. Step 3: Cross multiply
   3,819.88x = 5,272.56 × 2,493.78
4. Step 4: Simplify right side
   3,819.88x = 13,148,615.10
5. Step 5: Solve for x
   x = 13,148,615.10/3,819.88
6. Step 6: Final answer
   x = 3,442.15