Finding the Fourth Proportional to 22,467.16, 31,006.42 and 12,397.60

Step by Step Solution

1. Step 1: Write the proportion equation
   22,467.16 : 31,006.42 = 12,397.60 : x
2. Step 2: Convert to fraction form
   22,467.16/31,006.42 = 12,397.60/x
3. Step 3: Cross multiply
   22,467.16x = 31,006.42 × 12,397.60
4. Step 4: Simplify right side
   22,467.16x = 384,405,192.59
5. Step 5: Solve for x
   x = 384,405,192.59/22,467.16
6. Step 6: Final answer
   x = 17,109.65