Finding the Fourth Proportional to 16,964.97, 23,411.49 and 9,411.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,964.97 : 23,411.49 = 9,411.31 : x
2. Step 2: Convert to fraction form
   16,964.97/23,411.49 = 9,411.31/x
3. Step 3: Cross multiply
   16,964.97x = 23,411.49 × 9,411.31
4. Step 4: Simplify right side
   16,964.97x = 220,332,789.95
5. Step 5: Solve for x
   x = 220,332,789.95/16,964.97
6. Step 6: Final answer
   x = 12,987.51