Finding the Fourth Proportional to 9,992.42, 13,786.78 and 5,743.26

Step by Step Solution

1. Step 1: Write the proportion equation
   9,992.42 : 13,786.78 = 5,743.26 : x
2. Step 2: Convert to fraction form
   9,992.42/13,786.78 = 5,743.26/x
3. Step 3: Cross multiply
   9,992.42x = 13,786.78 × 5,743.26
4. Step 4: Simplify right side
   9,992.42x = 79,181,062.10
5. Step 5: Solve for x
   x = 79,181,062.10/9,992.42
6. Step 6: Final answer
   x = 7,924.11