Finding the Fourth Proportional to 9,981.05, 13,774.52 and 5,789.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,981.05 : 13,774.52 = 5,789.30 : x
2. Step 2: Convert to fraction form
   9,981.05/13,774.52 = 5,789.30/x
3. Step 3: Cross multiply
   9,981.05x = 13,774.52 × 5,789.30
4. Step 4: Simplify right side
   9,981.05x = 79,744,774.24
5. Step 5: Solve for x
   x = 79,744,774.24/9,981.05
6. Step 6: Final answer
   x = 7,989.62