Finding the Fourth Proportional to 9,936.72, 13,712.72 and 5,957.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,936.72 : 13,712.72 = 5,957.82 : x
2. Step 2: Convert to fraction form
   9,936.72/13,712.72 = 5,957.82/x
3. Step 3: Cross multiply
   9,936.72x = 13,712.72 × 5,957.82
4. Step 4: Simplify right side
   9,936.72x = 81,697,887.68
5. Step 5: Solve for x
   x = 81,697,887.68/9,936.72
6. Step 6: Final answer
   x = 8,221.82