Finding the Fourth Proportional to 22,168.72, 30,596.80 and 13,216.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,168.72 : 30,596.80 = 13,216.82 : x
2. Step 2: Convert to fraction form
   22,168.72/30,596.80 = 13,216.82/x
3. Step 3: Cross multiply
   22,168.72x = 30,596.80 × 13,216.82
4. Step 4: Simplify right side
   22,168.72x = 404,392,398.18
5. Step 5: Solve for x
   x = 404,392,398.18/22,168.72
6. Step 6: Final answer
   x = 18,241.58