Finding the Fourth Proportional to 8,936.53, 12,329.91 and 7,042.24

Step by Step Solution

1. Step 1: Write the proportion equation
   8,936.53 : 12,329.91 = 7,042.24 : x
2. Step 2: Convert to fraction form
   8,936.53/12,329.91 = 7,042.24/x
3. Step 3: Cross multiply
   8,936.53x = 12,329.91 × 7,042.24
4. Step 4: Simplify right side
   8,936.53x = 86,830,131.46
5. Step 5: Solve for x
   x = 86,830,131.46/8,936.53
6. Step 6: Final answer
   x = 9,716.31