Finding the Fourth Proportional to 3,876.72, 5,354.25 and 2,556.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,876.72 : 5,354.25 = 2,556.27 : x
2. Step 2: Convert to fraction form
   3,876.72/5,354.25 = 2,556.27/x
3. Step 3: Cross multiply
   3,876.72x = 5,354.25 × 2,556.27
4. Step 4: Simplify right side
   3,876.72x = 13,686,908.65
5. Step 5: Solve for x
   x = 13,686,908.65/3,876.72
6. Step 6: Final answer
   x = 3,530.54