Finding the Fourth Proportional to 8,785.13, 12,123.59 and 4,806.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,785.13 : 12,123.59 = 4,806.31 : x
2. Step 2: Convert to fraction form
   8,785.13/12,123.59 = 4,806.31/x
3. Step 3: Cross multiply
   8,785.13x = 12,123.59 × 4,806.31
4. Step 4: Simplify right side
   8,785.13x = 58,269,743.87
5. Step 5: Solve for x
   x = 58,269,743.87/8,785.13
6. Step 6: Final answer
   x = 6,632.77