Finding the Fourth Proportional to 20,123.10, 30,187.35 and 8,433.59

Step by Step Solution

1. Step 1: Write the proportion equation
   20,123.10 : 30,187.35 = 8,433.59 : x
2. Step 2: Convert to fraction form
   20,123.10/30,187.35 = 8,433.59/x
3. Step 3: Cross multiply
   20,123.10x = 30,187.35 × 8,433.59
4. Step 4: Simplify right side
   20,123.10x = 254,587,582.15
5. Step 5: Solve for x
   x = 254,587,582.15/20,123.10
6. Step 6: Final answer
   x = 12,651.51