Finding the Fourth Proportional to 10,065.92, 13,890.69 and 5,589.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,065.92 : 13,890.69 = 5,589.54 : x
2. Step 2: Convert to fraction form
   10,065.92/13,890.69 = 5,589.54/x
3. Step 3: Cross multiply
   10,065.92x = 13,890.69 × 5,589.54
4. Step 4: Simplify right side
   10,065.92x = 77,642,567.38
5. Step 5: Solve for x
   x = 77,642,567.38/10,065.92
6. Step 6: Final answer
   x = 7,713.41