Finding the Fourth Proportional to 20,325.94, 30,488.00 and 8,474.83

Step by Step Solution

1. Step 1: Write the proportion equation
   20,325.94 : 30,488.00 = 8,474.83 : x
2. Step 2: Convert to fraction form
   20,325.94/30,488.00 = 8,474.83/x
3. Step 3: Cross multiply
   20,325.94x = 30,488.00 × 8,474.83
4. Step 4: Simplify right side
   20,325.94x = 258,380,498.45
5. Step 5: Solve for x
   x = 258,380,498.45/20,325.94
6. Step 6: Final answer
   x = 12,711.86