Finding the Fourth Proportional to 20,518.96, 30,766.12 and 9,411.73

Step by Step Solution

1. Step 1: Write the proportion equation
   20,518.96 : 30,766.12 = 9,411.73 : x
2. Step 2: Convert to fraction form
   20,518.96/30,766.12 = 9,411.73/x
3. Step 3: Cross multiply
   20,518.96x = 30,766.12 × 9,411.73
4. Step 4: Simplify right side
   20,518.96x = 289,562,414.59
5. Step 5: Solve for x
   x = 289,562,414.59/20,518.96
6. Step 6: Final answer
   x = 14,111.94