Finding the Fourth Proportional to 21,694.72, 29,938.56 and 12,265.12

Step by Step Solution

1. Step 1: Write the proportion equation
   21,694.72 : 29,938.56 = 12,265.12 : x
2. Step 2: Convert to fraction form
   21,694.72/29,938.56 = 12,265.12/x
3. Step 3: Cross multiply
   21,694.72x = 29,938.56 × 12,265.12
4. Step 4: Simplify right side
   21,694.72x = 367,200,031.03
5. Step 5: Solve for x
   x = 367,200,031.03/21,694.72
6. Step 6: Final answer
   x = 16,925.78