Finding the Fourth Proportional to 16,960.72, 23,406.98 and 9,407.77

Step by Step Solution

1. Step 1: Write the proportion equation
   16,960.72 : 23,406.98 = 9,407.77 : x
2. Step 2: Convert to fraction form
   16,960.72/23,406.98 = 9,407.77/x
3. Step 3: Cross multiply
   16,960.72x = 23,406.98 × 9,407.77
4. Step 4: Simplify right side
   16,960.72x = 220,207,320.16
5. Step 5: Solve for x
   x = 220,207,320.16/16,960.72
6. Step 6: Final answer
   x = 12,983.37