Finding the Fourth Proportional to 5,280.16, 7,287.04 and 2,922.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,280.16 : 7,287.04 = 2,922.72 : x
2. Step 2: Convert to fraction form
   5,280.16/7,287.04 = 2,922.72/x
3. Step 3: Cross multiply
   5,280.16x = 7,287.04 × 2,922.72
4. Step 4: Simplify right side
   5,280.16x = 21,297,977.55
5. Step 5: Solve for x
   x = 21,297,977.55/5,280.16
6. Step 6: Final answer
   x = 4,033.59