Finding the Fourth Proportional to 12,020.50, 18,049.22 and 10,716.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,020.50 : 18,049.22 = 10,716.50 : x
2. Step 2: Convert to fraction form
   12,020.50/18,049.22 = 10,716.50/x
3. Step 3: Cross multiply
   12,020.50x = 18,049.22 × 10,716.50
4. Step 4: Simplify right side
   12,020.50x = 193,424,375.88
5. Step 5: Solve for x
   x = 193,424,375.88/12,020.50
6. Step 6: Final answer
   x = 16,091.22