Finding the Fourth Proportional to 8,820.78, 12,172.59 and 4,841.85

Step by Step Solution

1. Step 1: Write the proportion equation
   8,820.78 : 12,172.59 = 4,841.85 : x
2. Step 2: Convert to fraction form
   8,820.78/12,172.59 = 4,841.85/x
3. Step 3: Cross multiply
   8,820.78x = 12,172.59 × 4,841.85
4. Step 4: Simplify right side
   8,820.78x = 58,937,854.89
5. Step 5: Solve for x
   x = 58,937,854.89/8,820.78
6. Step 6: Final answer
   x = 6,681.71