Finding the Fourth Proportional to 8,788.76, 12,128.85 and 4,810.22

Step by Step Solution

1. Step 1: Write the proportion equation
   8,788.76 : 12,128.85 = 4,810.22 : x
2. Step 2: Convert to fraction form
   8,788.76/12,128.85 = 4,810.22/x
3. Step 3: Cross multiply
   8,788.76x = 12,128.85 × 4,810.22
4. Step 4: Simplify right side
   8,788.76x = 58,342,436.85
5. Step 5: Solve for x
   x = 58,342,436.85/8,788.76
6. Step 6: Final answer
   x = 6,638.30