Finding the Fourth Proportional to 22,467.88, 31,004.28 and 12,396.40

Step by Step Solution

1. Step 1: Write the proportion equation
   22,467.88 : 31,004.28 = 12,396.40 : x
2. Step 2: Convert to fraction form
   22,467.88/31,004.28 = 12,396.40/x
3. Step 3: Cross multiply
   22,467.88x = 31,004.28 × 12,396.40
4. Step 4: Simplify right side
   22,467.88x = 384,341,456.59
5. Step 5: Solve for x
   x = 384,341,456.59/22,467.88
6. Step 6: Final answer
   x = 17,106.26