Finding the Fourth Proportional to 22,127.72, 30,521.08 and 13,168.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,127.72 : 30,521.08 = 13,168.31 : x
2. Step 2: Convert to fraction form
   22,127.72/30,521.08 = 13,168.31/x
3. Step 3: Cross multiply
   22,127.72x = 30,521.08 × 13,168.31
4. Step 4: Simplify right side
   22,127.72x = 401,911,086.36
5. Step 5: Solve for x
   x = 401,911,086.36/22,127.72
6. Step 6: Final answer
   x = 18,163.24