Finding the Fourth Proportional to 16,061.40, 24,072.90 and 8,266.20

Step by Step Solution

1. Step 1: Write the proportion equation
   16,061.40 : 24,072.90 = 8,266.20 : x
2. Step 2: Convert to fraction form
   16,061.40/24,072.90 = 8,266.20/x
3. Step 3: Cross multiply
   16,061.40x = 24,072.90 × 8,266.20
4. Step 4: Simplify right side
   16,061.40x = 198,991,405.98
5. Step 5: Solve for x
   x = 198,991,405.98/16,061.40
6. Step 6: Final answer
   x = 12,389.42