Finding the Fourth Proportional to 23,165.67, 31,968.62 and 12,555.30

Step by Step Solution

1. Step 1: Write the proportion equation
   23,165.67 : 31,968.62 = 12,555.30 : x
2. Step 2: Convert to fraction form
   23,165.67/31,968.62 = 12,555.30/x
3. Step 3: Cross multiply
   23,165.67x = 31,968.62 × 12,555.30
4. Step 4: Simplify right side
   23,165.67x = 401,375,789.50
5. Step 5: Solve for x
   x = 401,375,789.50/23,165.67
6. Step 6: Final answer
   x = 17,326.32