Finding the Fourth Proportional to 8,785.96, 12,123.30 and 5,009.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,785.96 : 12,123.30 = 5,009.30 : x
2. Step 2: Convert to fraction form
   8,785.96/12,123.30 = 5,009.30/x
3. Step 3: Cross multiply
   8,785.96x = 12,123.30 × 5,009.30
4. Step 4: Simplify right side
   8,785.96x = 60,729,246.69
5. Step 5: Solve for x
   x = 60,729,246.69/8,785.96
6. Step 6: Final answer
   x = 6,912.08