Finding the Fourth Proportional to 8,920.98, 12,310.94 and 4,942.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,920.98 : 12,310.94 = 4,942.10 : x
2. Step 2: Convert to fraction form
   8,920.98/12,310.94 = 4,942.10/x
3. Step 3: Cross multiply
   8,920.98x = 12,310.94 × 4,942.10
4. Step 4: Simplify right side
   8,920.98x = 60,841,896.57
5. Step 5: Solve for x
   x = 60,841,896.57/8,920.98
6. Step 6: Final answer
   x = 6,820.09