Finding the Fourth Proportional to 7,200.72, 10,801.17 and 2,520.54

Step by Step Solution

1. Step 1: Write the proportion equation
   7,200.72 : 10,801.17 = 2,520.54 : x
2. Step 2: Convert to fraction form
   7,200.72/10,801.17 = 2,520.54/x
3. Step 3: Cross multiply
   7,200.72x = 10,801.17 × 2,520.54
4. Step 4: Simplify right side
   7,200.72x = 27,224,781.03
5. Step 5: Solve for x
   x = 27,224,781.03/7,200.72
6. Step 6: Final answer
   x = 3,780.84