Finding the Fourth Proportional to 23,168.70, 31,972.86 and 12,558.29

Step by Step Solution

1. Step 1: Write the proportion equation
   23,168.70 : 31,972.86 = 12,558.29 : x
2. Step 2: Convert to fraction form
   23,168.70/31,972.86 = 12,558.29/x
3. Step 3: Cross multiply
   23,168.70x = 31,972.86 × 12,558.29
4. Step 4: Simplify right side
   23,168.70x = 401,524,288.15
5. Step 5: Solve for x
   x = 401,524,288.15/23,168.70
6. Step 6: Final answer
   x = 17,330.46