Finding the Fourth Proportional to 12,499.65, 17,225.67 and 8,956.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,499.65 : 17,225.67 = 8,956.71 : x
2. Step 2: Convert to fraction form
   12,499.65/17,225.67 = 8,956.71/x
3. Step 3: Cross multiply
   12,499.65x = 17,225.67 × 8,956.71
4. Step 4: Simplify right side
   12,499.65x = 154,285,330.75
5. Step 5: Solve for x
   x = 154,285,330.75/12,499.65
6. Step 6: Final answer
   x = 12,343.17