Finding the Fourth Proportional to 8,936.86, 12,329.31 and 5,749.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,936.86 : 12,329.31 = 5,749.69 : x
2. Step 2: Convert to fraction form
   8,936.86/12,329.31 = 5,749.69/x
3. Step 3: Cross multiply
   8,936.86x = 12,329.31 × 5,749.69
4. Step 4: Simplify right side
   8,936.86x = 70,889,710.41
5. Step 5: Solve for x
   x = 70,889,710.41/8,936.86
6. Step 6: Final answer
   x = 7,932.28