Finding the Fourth Proportional to 23,168.23, 31,972.18 and 12,557.86

Step by Step Solution

1. Step 1: Write the proportion equation
   23,168.23 : 31,972.18 = 12,557.86 : x
2. Step 2: Convert to fraction form
   23,168.23/31,972.18 = 12,557.86/x
3. Step 3: Cross multiply
   23,168.23x = 31,972.18 × 12,557.86
4. Step 4: Simplify right side
   23,168.23x = 401,502,031.87
5. Step 5: Solve for x
   x = 401,502,031.87/23,168.23
6. Step 6: Final answer
   x = 17,329.86