Finding the Fourth Proportional to 5,514.31, 8,272.38 and 2,555.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,514.31 : 8,272.38 = 2,555.72 : x
2. Step 2: Convert to fraction form
   5,514.31/8,272.38 = 2,555.72/x
3. Step 3: Cross multiply
   5,514.31x = 8,272.38 × 2,555.72
4. Step 4: Simplify right side
   5,514.31x = 21,141,886.26
5. Step 5: Solve for x
   x = 21,141,886.26/5,514.31
6. Step 6: Final answer
   x = 3,834.00