Finding the Fourth Proportional to 10,721.75, 16,078.67 and 3,699.97

Step by Step Solution

1. Step 1: Write the proportion equation
   10,721.75 : 16,078.67 = 3,699.97 : x
2. Step 2: Convert to fraction form
   10,721.75/16,078.67 = 3,699.97/x
3. Step 3: Cross multiply
   10,721.75x = 16,078.67 × 3,699.97
4. Step 4: Simplify right side
   10,721.75x = 59,490,605.89
5. Step 5: Solve for x
   x = 59,490,605.89/10,721.75
6. Step 6: Final answer
   x = 5,548.59