Finding the Fourth Proportional to 17,215.39, 23,754.99 and 9,661.15

Step by Step Solution

1. Step 1: Write the proportion equation
   17,215.39 : 23,754.99 = 9,661.15 : x
2. Step 2: Convert to fraction form
   17,215.39/23,754.99 = 9,661.15/x
3. Step 3: Cross multiply
   17,215.39x = 23,754.99 × 9,661.15
4. Step 4: Simplify right side
   17,215.39x = 229,500,521.64
5. Step 5: Solve for x
   x = 229,500,521.64/17,215.39
6. Step 6: Final answer
   x = 13,331.13