Finding the Fourth Proportional to 22,019.88, 30,381.60 and 13,069.36

Step by Step Solution

1. Step 1: Write the proportion equation
   22,019.88 : 30,381.60 = 13,069.36 : x
2. Step 2: Convert to fraction form
   22,019.88/30,381.60 = 13,069.36/x
3. Step 3: Cross multiply
   22,019.88x = 30,381.60 × 13,069.36
4. Step 4: Simplify right side
   22,019.88x = 397,068,067.78
5. Step 5: Solve for x
   x = 397,068,067.78/22,019.88
6. Step 6: Final answer
   x = 18,032.25