Finding the Fourth Proportional to 23,165.69, 31,968.72 and 12,555.29

Step by Step Solution

1. Step 1: Write the proportion equation
   23,165.69 : 31,968.72 = 12,555.29 : x
2. Step 2: Convert to fraction form
   23,165.69/31,968.72 = 12,555.29/x
3. Step 3: Cross multiply
   23,165.69x = 31,968.72 × 12,555.29
4. Step 4: Simplify right side
   23,165.69x = 401,376,390.69
5. Step 5: Solve for x
   x = 401,376,390.69/23,165.69
6. Step 6: Final answer
   x = 17,326.33