Finding the Fourth Proportional to 16,960.52, 23,406.17 and 9,406.87

Step by Step Solution

1. Step 1: Write the proportion equation
   16,960.52 : 23,406.17 = 9,406.87 : x
2. Step 2: Convert to fraction form
   16,960.52/23,406.17 = 9,406.87/x
3. Step 3: Cross multiply
   16,960.52x = 23,406.17 × 9,406.87
4. Step 4: Simplify right side
   16,960.52x = 220,178,692.84
5. Step 5: Solve for x
   x = 220,178,692.84/16,960.52
6. Step 6: Final answer
   x = 12,981.83