Finding the Fourth Proportional to 8,785.05, 12,122.84 and 5,007.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,785.05 : 12,122.84 = 5,007.69 : x
2. Step 2: Convert to fraction form
   8,785.05/12,122.84 = 5,007.69/x
3. Step 3: Cross multiply
   8,785.05x = 12,122.84 × 5,007.69
4. Step 4: Simplify right side
   8,785.05x = 60,707,399.60
5. Step 5: Solve for x
   x = 60,707,399.60/8,785.05
6. Step 6: Final answer
   x = 6,910.31