Finding the Fourth Proportional to 21,556.02, 29,747.10 and 12,124.38

Step by Step Solution

1. Step 1: Write the proportion equation
   21,556.02 : 29,747.10 = 12,124.38 : x
2. Step 2: Convert to fraction form
   21,556.02/29,747.10 = 12,124.38/x
3. Step 3: Cross multiply
   21,556.02x = 29,747.10 × 12,124.38
4. Step 4: Simplify right side
   21,556.02x = 360,665,144.30
5. Step 5: Solve for x
   x = 360,665,144.30/21,556.02
6. Step 6: Final answer
   x = 16,731.53