Finding the Fourth Proportional to 23,168.42, 31,972.59 and 12,558.13

Step by Step Solution

1. Step 1: Write the proportion equation
   23,168.42 : 31,972.59 = 12,558.13 : x
2. Step 2: Convert to fraction form
   23,168.42/31,972.59 = 12,558.13/x
3. Step 3: Cross multiply
   23,168.42x = 31,972.59 × 12,558.13
4. Step 4: Simplify right side
   23,168.42x = 401,515,941.66
5. Step 5: Solve for x
   x = 401,515,941.66/23,168.42
6. Step 6: Final answer
   x = 17,330.31