Finding the Fourth Proportional to 12,467.46, 18,628.16 and 12,031.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,467.46 : 18,628.16 = 12,031.42 : x
2. Step 2: Convert to fraction form
   12,467.46/18,628.16 = 12,031.42/x
3. Step 3: Cross multiply
   12,467.46x = 18,628.16 × 12,031.42
4. Step 4: Simplify right side
   12,467.46x = 224,123,216.79
5. Step 5: Solve for x
   x = 224,123,216.79/12,467.46
6. Step 6: Final answer
   x = 17,976.65