Finding the Fourth Proportional to 21,627.15, 29,845.70 and 12,067.89

Step by Step Solution

1. Step 1: Write the proportion equation
   21,627.15 : 29,845.70 = 12,067.89 : x
2. Step 2: Convert to fraction form
   21,627.15/29,845.70 = 12,067.89/x
3. Step 3: Cross multiply
   21,627.15x = 29,845.70 × 12,067.89
4. Step 4: Simplify right side
   21,627.15x = 360,174,564.23
5. Step 5: Solve for x
   x = 360,174,564.23/21,627.15
6. Step 6: Final answer
   x = 16,653.82