Finding the Fourth Proportional to 20,640.68, 30,951.72 and 5,846.09

Step by Step Solution

1. Step 1: Write the proportion equation
   20,640.68 : 30,951.72 = 5,846.09 : x
2. Step 2: Convert to fraction form
   20,640.68/30,951.72 = 5,846.09/x
3. Step 3: Cross multiply
   20,640.68x = 30,951.72 × 5,846.09
4. Step 4: Simplify right side
   20,640.68x = 180,946,540.77
5. Step 5: Solve for x
   x = 180,946,540.77/20,640.68
6. Step 6: Final answer
   x = 8,766.50