Finding the Fourth Proportional to 5,280.72, 7,286.94 and 2,922.30

Step by Step Solution

1. Step 1: Write the proportion equation
   5,280.72 : 7,286.94 = 2,922.30 : x
2. Step 2: Convert to fraction form
   5,280.72/7,286.94 = 2,922.30/x
3. Step 3: Cross multiply
   5,280.72x = 7,286.94 × 2,922.30
4. Step 4: Simplify right side
   5,280.72x = 21,294,624.76
5. Step 5: Solve for x
   x = 21,294,624.76/5,280.72
6. Step 6: Final answer
   x = 4,032.52