Finding the Fourth Proportional to 9,986.54, 13,782.12 and 5,738.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,986.54 : 13,782.12 = 5,738.27 : x
2. Step 2: Convert to fraction form
   9,986.54/13,782.12 = 5,738.27/x
3. Step 3: Cross multiply
   9,986.54x = 13,782.12 × 5,738.27
4. Step 4: Simplify right side
   9,986.54x = 79,085,525.73
5. Step 5: Solve for x
   x = 79,085,525.73/9,986.54
6. Step 6: Final answer
   x = 7,919.21