Finding the Fourth Proportional to 8,820.72, 12,172.56 and 4,841.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,820.72 : 12,172.56 = 4,841.88 : x
2. Step 2: Convert to fraction form
   8,820.72/12,172.56 = 4,841.88/x
3. Step 3: Cross multiply
   8,820.72x = 12,172.56 × 4,841.88
4. Step 4: Simplify right side
   8,820.72x = 58,938,074.81
5. Step 5: Solve for x
   x = 58,938,074.81/8,820.72
6. Step 6: Final answer
   x = 6,681.78