Finding the Fourth Proportional to 8,490.27, 12,732.98 and 2,942.18

Step by Step Solution

1. Step 1: Write the proportion equation
   8,490.27 : 12,732.98 = 2,942.18 : x
2. Step 2: Convert to fraction form
   8,490.27/12,732.98 = 2,942.18/x
3. Step 3: Cross multiply
   8,490.27x = 12,732.98 × 2,942.18
4. Step 4: Simplify right side
   8,490.27x = 37,462,640.72
5. Step 5: Solve for x
   x = 37,462,640.72/8,490.27
6. Step 6: Final answer
   x = 4,412.42