Finding the Fourth Proportional to 21,759.50, 30,028.29 and 11,823.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,759.50 : 30,028.29 = 11,823.50 : x
2. Step 2: Convert to fraction form
   21,759.50/30,028.29 = 11,823.50/x
3. Step 3: Cross multiply
   21,759.50x = 30,028.29 × 11,823.50
4. Step 4: Simplify right side
   21,759.50x = 355,039,486.82
5. Step 5: Solve for x
   x = 355,039,486.82/21,759.50
6. Step 6: Final answer
   x = 16,316.53