Finding the Fourth Proportional to 22,339.28, 30,825.93 and 13,386.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,339.28 : 30,825.93 = 13,386.56 : x
2. Step 2: Convert to fraction form
   22,339.28/30,825.93 = 13,386.56/x
3. Step 3: Cross multiply
   22,339.28x = 30,825.93 × 13,386.56
4. Step 4: Simplify right side
   22,339.28x = 412,653,007.37
5. Step 5: Solve for x
   x = 412,653,007.37/22,339.28
6. Step 6: Final answer
   x = 18,472.09