Finding the Fourth Proportional to 21,563.45, 29,757.57 and 12,132.02

Step by Step Solution

1. Step 1: Write the proportion equation
   21,563.45 : 29,757.57 = 12,132.02 : x
2. Step 2: Convert to fraction form
   21,563.45/29,757.57 = 12,132.02/x
3. Step 3: Cross multiply
   21,563.45x = 29,757.57 × 12,132.02
4. Step 4: Simplify right side
   21,563.45x = 361,019,434.39
5. Step 5: Solve for x
   x = 361,019,434.39/21,563.45
6. Step 6: Final answer
   x = 16,742.19