Finding the Fourth Proportional to 20,499.98, 30,759.54 and 8,016.77

Step by Step Solution

1. Step 1: Write the proportion equation
   20,499.98 : 30,759.54 = 8,016.77 : x
2. Step 2: Convert to fraction form
   20,499.98/30,759.54 = 8,016.77/x
3. Step 3: Cross multiply
   20,499.98x = 30,759.54 × 8,016.77
4. Step 4: Simplify right side
   20,499.98x = 246,592,003.69
5. Step 5: Solve for x
   x = 246,592,003.69/20,499.98
6. Step 6: Final answer
   x = 12,028.89