Finding the Fourth Proportional to 8,133.72, 12,200.82 and 2,939.64

Step by Step Solution

1. Step 1: Write the proportion equation
   8,133.72 : 12,200.82 = 2,939.64 : x
2. Step 2: Convert to fraction form
   8,133.72/12,200.82 = 2,939.64/x
3. Step 3: Cross multiply
   8,133.72x = 12,200.82 × 2,939.64
4. Step 4: Simplify right side
   8,133.72x = 35,866,018.50
5. Step 5: Solve for x
   x = 35,866,018.50/8,133.72
6. Step 6: Final answer
   x = 4,409.55