Finding the Fourth Proportional to 9,936.15, 13,711.82 and 5,398.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,936.15 : 13,711.82 = 5,398.80 : x
2. Step 2: Convert to fraction form
   9,936.15/13,711.82 = 5,398.80/x
3. Step 3: Cross multiply
   9,936.15x = 13,711.82 × 5,398.80
4. Step 4: Simplify right side
   9,936.15x = 74,027,373.82
5. Step 5: Solve for x
   x = 74,027,373.82/9,936.15
6. Step 6: Final answer
   x = 7,450.31