Finding the Fourth Proportional to 17,760.04, 26,644.23 and 5,280.17

Step by Step Solution

1. Step 1: Write the proportion equation
   17,760.04 : 26,644.23 = 5,280.17 : x
2. Step 2: Convert to fraction form
   17,760.04/26,644.23 = 5,280.17/x
3. Step 3: Cross multiply
   17,760.04x = 26,644.23 × 5,280.17
4. Step 4: Simplify right side
   17,760.04x = 140,685,930.70
5. Step 5: Solve for x
   x = 140,685,930.70/17,760.04
6. Step 6: Final answer
   x = 7,921.49