Finding the Fourth Proportional to 8,820.73, 12,172.89 and 4,842.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,820.73 : 12,172.89 = 4,842.10 : x
2. Step 2: Convert to fraction form
   8,820.73/12,172.89 = 4,842.10/x
3. Step 3: Cross multiply
   8,820.73x = 12,172.89 × 4,842.10
4. Step 4: Simplify right side
   8,820.73x = 58,942,350.67
5. Step 5: Solve for x
   x = 58,942,350.67/8,820.73
6. Step 6: Final answer
   x = 6,682.25