Finding the Fourth Proportional to 16,981.50, 23,436.72 and 9,529.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,981.50 : 23,436.72 = 9,529.50 : x
2. Step 2: Convert to fraction form
   16,981.50/23,436.72 = 9,529.50/x
3. Step 3: Cross multiply
   16,981.50x = 23,436.72 × 9,529.50
4. Step 4: Simplify right side
   16,981.50x = 223,340,223.24
5. Step 5: Solve for x
   x = 223,340,223.24/16,981.50
6. Step 6: Final answer
   x = 13,151.97