Finding the Fourth Proportional to 16,964.79, 23,411.47 and 9,411.27

Step by Step Solution

1. Step 1: Write the proportion equation
   16,964.79 : 23,411.47 = 9,411.27 : x
2. Step 2: Convert to fraction form
   16,964.79/23,411.47 = 9,411.27/x
3. Step 3: Cross multiply
   16,964.79x = 23,411.47 × 9,411.27
4. Step 4: Simplify right side
   16,964.79x = 220,331,729.75
5. Step 5: Solve for x
   x = 220,331,729.75/16,964.79
6. Step 6: Final answer
   x = 12,987.59