Finding the Fourth Proportional to 16,963.72, 23,411.34 and 9,411.88

Step by Step Solution

1. Step 1: Write the proportion equation
   16,963.72 : 23,411.34 = 9,411.88 : x
2. Step 2: Convert to fraction form
   16,963.72/23,411.34 = 9,411.88/x
3. Step 3: Cross multiply
   16,963.72x = 23,411.34 × 9,411.88
4. Step 4: Simplify right side
   16,963.72x = 220,344,722.72
5. Step 5: Solve for x
   x = 220,344,722.72/16,963.72
6. Step 6: Final answer
   x = 12,989.17