Finding the Fourth Proportional to 21,727.50, 29,983.98 and 11,791.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,727.50 : 29,983.98 = 11,791.50 : x
2. Step 2: Convert to fraction form
   21,727.50/29,983.98 = 11,791.50/x
3. Step 3: Cross multiply
   21,727.50x = 29,983.98 × 11,791.50
4. Step 4: Simplify right side
   21,727.50x = 353,556,100.17
5. Step 5: Solve for x
   x = 353,556,100.17/21,727.50
6. Step 6: Final answer
   x = 16,272.29