Finding the Fourth Proportional to 8,826.32, 13,222.16 and 5,120.77

Step by Step Solution

1. Step 1: Write the proportion equation
   8,826.32 : 13,222.16 = 5,120.77 : x
2. Step 2: Convert to fraction form
   8,826.32/13,222.16 = 5,120.77/x
3. Step 3: Cross multiply
   8,826.32x = 13,222.16 × 5,120.77
4. Step 4: Simplify right side
   8,826.32x = 67,707,640.00
5. Step 5: Solve for x
   x = 67,707,640.00/8,826.32
6. Step 6: Final answer
   x = 7,671.11