Finding the Fourth Proportional to 23,164.65, 31,967.20 and 12,554.28

Step by Step Solution

1. Step 1: Write the proportion equation
   23,164.65 : 31,967.20 = 12,554.28 : x
2. Step 2: Convert to fraction form
   23,164.65/31,967.20 = 12,554.28/x
3. Step 3: Cross multiply
   23,164.65x = 31,967.20 × 12,554.28
4. Step 4: Simplify right side
   23,164.65x = 401,325,019.78
5. Step 5: Solve for x
   x = 401,325,019.78/23,164.65
6. Step 6: Final answer
   x = 17,324.89