Finding the Fourth Proportional to 10,725.92, 14,788.90 and 9,231.27

Step by Step Solution

1. Step 1: Write the proportion equation
   10,725.92 : 14,788.90 = 9,231.27 : x
2. Step 2: Convert to fraction form
   10,725.92/14,788.90 = 9,231.27/x
3. Step 3: Cross multiply
   10,725.92x = 14,788.90 × 9,231.27
4. Step 4: Simplify right side
   10,725.92x = 136,520,328.90
5. Step 5: Solve for x
   x = 136,520,328.90/10,725.92
6. Step 6: Final answer
   x = 12,728.08