Finding the Fourth Proportional to 23,168.63, 31,972.64 and 12,558.31

Step by Step Solution

1. Step 1: Write the proportion equation
   23,168.63 : 31,972.64 = 12,558.31 : x
2. Step 2: Convert to fraction form
   23,168.63/31,972.64 = 12,558.31/x
3. Step 3: Cross multiply
   23,168.63x = 31,972.64 × 12,558.31
4. Step 4: Simplify right side
   23,168.63x = 401,522,181.92
5. Step 5: Solve for x
   x = 401,522,181.92/23,168.63
6. Step 6: Final answer
   x = 17,330.42