Finding the Fourth Proportional to 23,165.20, 31,967.98 and 12,554.78

Step by Step Solution

1. Step 1: Write the proportion equation
   23,165.20 : 31,967.98 = 12,554.78 : x
2. Step 2: Convert to fraction form
   23,165.20/31,967.98 = 12,554.78/x
3. Step 3: Cross multiply
   23,165.20x = 31,967.98 × 12,554.78
4. Step 4: Simplify right side
   23,165.20x = 401,350,955.94
5. Step 5: Solve for x
   x = 401,350,955.94/23,165.20
6. Step 6: Final answer
   x = 17,325.60