Finding the Fourth Proportional to 9,993.71, 13,791.24 and 5,517.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,993.71 : 13,791.24 = 5,517.47 : x
2. Step 2: Convert to fraction form
   9,993.71/13,791.24 = 5,517.47/x
3. Step 3: Cross multiply
   9,993.71x = 13,791.24 × 5,517.47
4. Step 4: Simplify right side
   9,993.71x = 76,092,752.96
5. Step 5: Solve for x
   x = 76,092,752.96/9,993.71
6. Step 6: Final answer
   x = 7,614.06