Finding the Fourth Proportional to 8,857.35, 12,222.77 and 5,077.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,857.35 : 12,222.77 = 5,077.89 : x
2. Step 2: Convert to fraction form
   8,857.35/12,222.77 = 5,077.89/x
3. Step 3: Cross multiply
   8,857.35x = 12,222.77 × 5,077.89
4. Step 4: Simplify right side
   8,857.35x = 62,065,856.17
5. Step 5: Solve for x
   x = 62,065,856.17/8,857.35
6. Step 6: Final answer
   x = 7,007.27