Finding the Fourth Proportional to 9,993.65, 13,791.06 and 5,517.59

Step by Step Solution

1. Step 1: Write the proportion equation
   9,993.65 : 13,791.06 = 5,517.59 : x
2. Step 2: Convert to fraction form
   9,993.65/13,791.06 = 5,517.59/x
3. Step 3: Cross multiply
   9,993.65x = 13,791.06 × 5,517.59
4. Step 4: Simplify right side
   9,993.65x = 76,093,345.79
5. Step 5: Solve for x
   x = 76,093,345.79/9,993.65
6. Step 6: Final answer
   x = 7,614.17