Finding the Fourth Proportional to 8,426.72, 12,641.33 and 2,725.77

Step by Step Solution

1. Step 1: Write the proportion equation
   8,426.72 : 12,641.33 = 2,725.77 : x
2. Step 2: Convert to fraction form
   8,426.72/12,641.33 = 2,725.77/x
3. Step 3: Cross multiply
   8,426.72x = 12,641.33 × 2,725.77
4. Step 4: Simplify right side
   8,426.72x = 34,457,344.45
5. Step 5: Solve for x
   x = 34,457,344.45/8,426.72
6. Step 6: Final answer
   x = 4,089.06