Finding the Fourth Proportional to 9,982.12, 13,772.28 and 5,789.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,982.12 : 13,772.28 = 5,789.56 : x
2. Step 2: Convert to fraction form
   9,982.12/13,772.28 = 5,789.56/x
3. Step 3: Cross multiply
   9,982.12x = 13,772.28 × 5,789.56
4. Step 4: Simplify right side
   9,982.12x = 79,735,441.40
5. Step 5: Solve for x
   x = 79,735,441.40/9,982.12
6. Step 6: Final answer
   x = 7,987.83