Finding the Fourth Proportional to 20,826.06, 28,743.46 and 16,383.72

Step by Step Solution

1. Step 1: Write the proportion equation
   20,826.06 : 28,743.46 = 16,383.72 : x
2. Step 2: Convert to fraction form
   20,826.06/28,743.46 = 16,383.72/x
3. Step 3: Cross multiply
   20,826.06x = 28,743.46 × 16,383.72
4. Step 4: Simplify right side
   20,826.06x = 470,924,800.47
5. Step 5: Solve for x
   x = 470,924,800.47/20,826.06
6. Step 6: Final answer
   x = 22,612.28