Finding the Fourth Proportional to 8,606.28, 12,910.50 and 2,761.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,606.28 : 12,910.50 = 2,761.32 : x
2. Step 2: Convert to fraction form
   8,606.28/12,910.50 = 2,761.32/x
3. Step 3: Cross multiply
   8,606.28x = 12,910.50 × 2,761.32
4. Step 4: Simplify right side
   8,606.28x = 35,650,021.86
5. Step 5: Solve for x
   x = 35,650,021.86/8,606.28
6. Step 6: Final answer
   x = 4,142.33