Finding the Fourth Proportional to 5,004.20, 7,510.88 and 2,540.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,004.20 : 7,510.88 = 2,540.72 : x
2. Step 2: Convert to fraction form
   5,004.20/7,510.88 = 2,540.72/x
3. Step 3: Cross multiply
   5,004.20x = 7,510.88 × 2,540.72
4. Step 4: Simplify right side
   5,004.20x = 19,083,043.03
5. Step 5: Solve for x
   x = 19,083,043.03/5,004.20
6. Step 6: Final answer
   x = 3,813.41