Finding the Fourth Proportional to 16,200.20, 22,366.61 and 13,223.15

Step by Step Solution

1. Step 1: Write the proportion equation
   16,200.20 : 22,366.61 = 13,223.15 : x
2. Step 2: Convert to fraction form
   16,200.20/22,366.61 = 13,223.15/x
3. Step 3: Cross multiply
   16,200.20x = 22,366.61 × 13,223.15
4. Step 4: Simplify right side
   16,200.20x = 295,756,861.07
5. Step 5: Solve for x
   x = 295,756,861.07/16,200.20
6. Step 6: Final answer
   x = 18,256.38