Finding the Fourth Proportional to 16,945.50, 23,379.36 and 10,981.74

Step by Step Solution

1. Step 1: Write the proportion equation
   16,945.50 : 23,379.36 = 10,981.74 : x
2. Step 2: Convert to fraction form
   16,945.50/23,379.36 = 10,981.74/x
3. Step 3: Cross multiply
   16,945.50x = 23,379.36 × 10,981.74
4. Step 4: Simplify right side
   16,945.50x = 256,746,052.89
5. Step 5: Solve for x
   x = 256,746,052.89/16,945.50
6. Step 6: Final answer
   x = 15,151.28