Finding the Fourth Proportional to 8,636.24, 12,932.49 and 5,339.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,636.24 : 12,932.49 = 5,339.34 : x
2. Step 2: Convert to fraction form
   8,636.24/12,932.49 = 5,339.34/x
3. Step 3: Cross multiply
   8,636.24x = 12,932.49 × 5,339.34
4. Step 4: Simplify right side
   8,636.24x = 69,050,981.18
5. Step 5: Solve for x
   x = 69,050,981.18/8,636.24
6. Step 6: Final answer
   x = 7,995.49