Finding the Fourth Proportional to 21,401.52, 29,535.52 and 11,969.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,401.52 : 29,535.52 = 11,969.52 : x
2. Step 2: Convert to fraction form
   21,401.52/29,535.52 = 11,969.52/x
3. Step 3: Cross multiply
   21,401.52x = 29,535.52 × 11,969.52
4. Step 4: Simplify right side
   21,401.52x = 353,525,997.35
5. Step 5: Solve for x
   x = 353,525,997.35/21,401.52
6. Step 6: Final answer
   x = 16,518.73