Finding the Fourth Proportional to 17,280.48, 23,845.20 and 9,726.69

Step by Step Solution

1. Step 1: Write the proportion equation
   17,280.48 : 23,845.20 = 9,726.69 : x
2. Step 2: Convert to fraction form
   17,280.48/23,845.20 = 9,726.69/x
3. Step 3: Cross multiply
   17,280.48x = 23,845.20 × 9,726.69
4. Step 4: Simplify right side
   17,280.48x = 231,934,868.39
5. Step 5: Solve for x
   x = 231,934,868.39/17,280.48
6. Step 6: Final answer
   x = 13,421.78