Finding the Fourth Proportional to 3,952.62, 5,456.55 and 2,556.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,952.62 : 5,456.55 = 2,556.30 : x
2. Step 2: Convert to fraction form
   3,952.62/5,456.55 = 2,556.30/x
3. Step 3: Cross multiply
   3,952.62x = 5,456.55 × 2,556.30
4. Step 4: Simplify right side
   3,952.62x = 13,948,578.77
5. Step 5: Solve for x
   x = 13,948,578.77/3,952.62
6. Step 6: Final answer
   x = 3,528.95