Finding the Fourth Proportional to 21,622.27, 29,838.72 and 11,686.27

Step by Step Solution

1. Step 1: Write the proportion equation
   21,622.27 : 29,838.72 = 11,686.27 : x
2. Step 2: Convert to fraction form
   21,622.27/29,838.72 = 11,686.27/x
3. Step 3: Cross multiply
   21,622.27x = 29,838.72 × 11,686.27
4. Step 4: Simplify right side
   21,622.27x = 348,703,279.94
5. Step 5: Solve for x
   x = 348,703,279.94/21,622.27
6. Step 6: Final answer
   x = 16,127.04