Finding the Fourth Proportional to 20,304.83, 30,461.34 and 8,459.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,304.83 : 30,461.34 = 8,459.50 : x
2. Step 2: Convert to fraction form
   20,304.83/30,461.34 = 8,459.50/x
3. Step 3: Cross multiply
   20,304.83x = 30,461.34 × 8,459.50
4. Step 4: Simplify right side
   20,304.83x = 257,687,705.73
5. Step 5: Solve for x
   x = 257,687,705.73/20,304.83
6. Step 6: Final answer
   x = 12,690.96