Finding the Fourth Proportional to 8,785.32, 12,123.78 and 4,806.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,785.32 : 12,123.78 = 4,806.50 : x
2. Step 2: Convert to fraction form
   8,785.32/12,123.78 = 4,806.50/x
3. Step 3: Cross multiply
   8,785.32x = 12,123.78 × 4,806.50
4. Step 4: Simplify right side
   8,785.32x = 58,272,948.57
5. Step 5: Solve for x
   x = 58,272,948.57/8,785.32
6. Step 6: Final answer
   x = 6,632.99