Finding the Fourth Proportional to 8,279.88, 12,420.42 and 2,733

Step by Step Solution

1. Step 1: Write the proportion equation
   8,279.88 : 12,420.42 = 2,733 : x
2. Step 2: Convert to fraction form
   8,279.88/12,420.42 = 2,733/x
3. Step 3: Cross multiply
   8,279.88x = 12,420.42 × 2,733
4. Step 4: Simplify right side
   8,279.88x = 33,945,007.86
5. Step 5: Solve for x
   x = 33,945,007.86/8,279.88
6. Step 6: Final answer
   x = 4,099.70