Finding the Fourth Proportional to 8,490.72, 12,733.05 and 2,942.58

Step by Step Solution

1. Step 1: Write the proportion equation
   8,490.72 : 12,733.05 = 2,942.58 : x
2. Step 2: Convert to fraction form
   8,490.72/12,733.05 = 2,942.58/x
3. Step 3: Cross multiply
   8,490.72x = 12,733.05 × 2,942.58
4. Step 4: Simplify right side
   8,490.72x = 37,468,018.27
5. Step 5: Solve for x
   x = 37,468,018.27/8,490.72
6. Step 6: Final answer
   x = 4,412.82