Finding the Fourth Proportional to 10,065.62, 13,890.99 and 5,589.37

Step by Step Solution

1. Step 1: Write the proportion equation
   10,065.62 : 13,890.99 = 5,589.37 : x
2. Step 2: Convert to fraction form
   10,065.62/13,890.99 = 5,589.37/x
3. Step 3: Cross multiply
   10,065.62x = 13,890.99 × 5,589.37
4. Step 4: Simplify right side
   10,065.62x = 77,641,921.10
5. Step 5: Solve for x
   x = 77,641,921.10/10,065.62
6. Step 6: Final answer
   x = 7,713.58