Finding the Fourth Proportional to 9,993.16, 13,790.82 and 5,517.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,993.16 : 13,790.82 = 5,517.10 : x
2. Step 2: Convert to fraction form
   9,993.16/13,790.82 = 5,517.10/x
3. Step 3: Cross multiply
   9,993.16x = 13,790.82 × 5,517.10
4. Step 4: Simplify right side
   9,993.16x = 76,085,333.02
5. Step 5: Solve for x
   x = 76,085,333.02/9,993.16
6. Step 6: Final answer
   x = 7,613.74