Finding the Fourth Proportional to 21,022.69, 29,011.50 and 11,591.59

Step by Step Solution

1. Step 1: Write the proportion equation
   21,022.69 : 29,011.50 = 11,591.59 : x
2. Step 2: Convert to fraction form
   21,022.69/29,011.50 = 11,591.59/x
3. Step 3: Cross multiply
   21,022.69x = 29,011.50 × 11,591.59
4. Step 4: Simplify right side
   21,022.69x = 336,289,413.29
5. Step 5: Solve for x
   x = 336,289,413.29/21,022.69
6. Step 6: Final answer
   x = 15,996.50