Finding the Fourth Proportional to 11,721.28, 17,584.79 and 3,401.12

Step by Step Solution

1. Step 1: Write the proportion equation
   11,721.28 : 17,584.79 = 3,401.12 : x
2. Step 2: Convert to fraction form
   11,721.28/17,584.79 = 3,401.12/x
3. Step 3: Cross multiply
   11,721.28x = 17,584.79 × 3,401.12
4. Step 4: Simplify right side
   11,721.28x = 59,807,876.04
5. Step 5: Solve for x
   x = 59,807,876.04/11,721.28
6. Step 6: Final answer
   x = 5,102.50