Finding the Fourth Proportional to 17,280.48, 23,847.60 and 9,828.96

Step by Step Solution

1. Step 1: Write the proportion equation
   17,280.48 : 23,847.60 = 9,828.96 : x
2. Step 2: Convert to fraction form
   17,280.48/23,847.60 = 9,828.96/x
3. Step 3: Cross multiply
   17,280.48x = 23,847.60 × 9,828.96
4. Step 4: Simplify right side
   17,280.48x = 234,397,106.50
5. Step 5: Solve for x
   x = 234,397,106.50/17,280.48
6. Step 6: Final answer
   x = 13,564.27