Finding the Fourth Proportional to 22,338.09, 30,825.48 and 12,909.69

Step by Step Solution

1. Step 1: Write the proportion equation
   22,338.09 : 30,825.48 = 12,909.69 : x
2. Step 2: Convert to fraction form
   22,338.09/30,825.48 = 12,909.69/x
3. Step 3: Cross multiply
   22,338.09x = 30,825.48 × 12,909.69
4. Step 4: Simplify right side
   22,338.09x = 397,947,390.90
5. Step 5: Solve for x
   x = 397,947,390.90/22,338.09
6. Step 6: Final answer
   x = 17,814.75