Finding the Fourth Proportional to 8,488.22, 12,733.02 and 2,939.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,488.22 : 12,733.02 = 2,939.31 : x
2. Step 2: Convert to fraction form
   8,488.22/12,733.02 = 2,939.31/x
3. Step 3: Cross multiply
   8,488.22x = 12,733.02 × 2,939.31
4. Step 4: Simplify right side
   8,488.22x = 37,426,293.02
5. Step 5: Solve for x
   x = 37,426,293.02/8,488.22
6. Step 6: Final answer
   x = 4,409.21