Finding the Fourth Proportional to 21,628.27, 29,846.95 and 12,196.83

Step by Step Solution

1. Step 1: Write the proportion equation
   21,628.27 : 29,846.95 = 12,196.83 : x
2. Step 2: Convert to fraction form
   21,628.27/29,846.95 = 12,196.83/x
3. Step 3: Cross multiply
   21,628.27x = 29,846.95 × 12,196.83
4. Step 4: Simplify right side
   21,628.27x = 364,038,175.17
5. Step 5: Solve for x
   x = 364,038,175.17/21,628.27
6. Step 6: Final answer
   x = 16,831.59