Finding the Fourth Proportional to 11,721.11, 17,582.27 and 3,929.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,721.11 : 17,582.27 = 3,929.31 : x
2. Step 2: Convert to fraction form
   11,721.11/17,582.27 = 3,929.31/x
3. Step 3: Cross multiply
   11,721.11x = 17,582.27 × 3,929.31
4. Step 4: Simplify right side
   11,721.11x = 69,086,169.69
5. Step 5: Solve for x
   x = 69,086,169.69/11,721.11
6. Step 6: Final answer
   x = 5,894.17