Finding the Fourth Proportional to 22,031.04, 30,399.60 and 13,078.92

Step by Step Solution

1. Step 1: Write the proportion equation
   22,031.04 : 30,399.60 = 13,078.92 : x
2. Step 2: Convert to fraction form
   22,031.04/30,399.60 = 13,078.92/x
3. Step 3: Cross multiply
   22,031.04x = 30,399.60 × 13,078.92
4. Step 4: Simplify right side
   22,031.04x = 397,593,936.43
5. Step 5: Solve for x
   x = 397,593,936.43/22,031.04
6. Step 6: Final answer
   x = 18,046.99