Finding the Fourth Proportional to 23,165.60, 31,968.55 and 12,555.23

Step by Step Solution

1. Step 1: Write the proportion equation
   23,165.60 : 31,968.55 = 12,555.23 : x
2. Step 2: Convert to fraction form
   23,165.60/31,968.55 = 12,555.23/x
3. Step 3: Cross multiply
   23,165.60x = 31,968.55 × 12,555.23
4. Step 4: Simplify right side
   23,165.60x = 401,372,408.47
5. Step 5: Solve for x
   x = 401,372,408.47/23,165.60
6. Step 6: Final answer
   x = 17,326.23