Finding the Fourth Proportional to 23,153.46, 31,951.78 and 12,543.06

Step by Step Solution

1. Step 1: Write the proportion equation
   23,153.46 : 31,951.78 = 12,543.06 : x
2. Step 2: Convert to fraction form
   23,153.46/31,951.78 = 12,543.06/x
3. Step 3: Cross multiply
   23,153.46x = 31,951.78 × 12,543.06
4. Step 4: Simplify right side
   23,153.46x = 400,773,093.65
5. Step 5: Solve for x
   x = 400,773,093.65/23,153.46
6. Step 6: Final answer
   x = 17,309.43