Finding the Fourth Proportional to 21,628.03, 29,847.54 and 12,196.39

Step by Step Solution

1. Step 1: Write the proportion equation
   21,628.03 : 29,847.54 = 12,196.39 : x
2. Step 2: Convert to fraction form
   21,628.03/29,847.54 = 12,196.39/x
3. Step 3: Cross multiply
   21,628.03x = 29,847.54 × 12,196.39
4. Step 4: Simplify right side
   21,628.03x = 364,032,238.38
5. Step 5: Solve for x
   x = 364,032,238.38/21,628.03
6. Step 6: Final answer
   x = 16,831.50