Finding the Fourth Proportional to 9,933.95, 13,711.61 and 5,687.39

Step by Step Solution

1. Step 1: Write the proportion equation
   9,933.95 : 13,711.61 = 5,687.39 : x
2. Step 2: Convert to fraction form
   9,933.95/13,711.61 = 5,687.39/x
3. Step 3: Cross multiply
   9,933.95x = 13,711.61 × 5,687.39
4. Step 4: Simplify right side
   9,933.95x = 77,983,273.60
5. Step 5: Solve for x
   x = 77,983,273.60/9,933.95
6. Step 6: Final answer
   x = 7,850.18