Finding the Fourth Proportional to 22,382.70, 30,885.71 and 12,949.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,382.70 : 30,885.71 = 12,949.50 : x
2. Step 2: Convert to fraction form
   22,382.70/30,885.71 = 12,949.50/x
3. Step 3: Cross multiply
   22,382.70x = 30,885.71 × 12,949.50
4. Step 4: Simplify right side
   22,382.70x = 399,954,436.90
5. Step 5: Solve for x
   x = 399,954,436.90/22,382.70
6. Step 6: Final answer
   x = 17,868.91