Finding the Fourth Proportional to 3,881.32, 5,354.89 and 2,556.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,881.32 : 5,354.89 = 2,556.37 : x
2. Step 2: Convert to fraction form
   3,881.32/5,354.89 = 2,556.37/x
3. Step 3: Cross multiply
   3,881.32x = 5,354.89 × 2,556.37
4. Step 4: Simplify right side
   3,881.32x = 13,689,080.15
5. Step 5: Solve for x
   x = 13,689,080.15/3,881.32
6. Step 6: Final answer
   x = 3,526.91