Finding the Fourth Proportional to 10,065.99, 13,890.48 and 5,589.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,065.99 : 13,890.48 = 5,589.42 : x
2. Step 2: Convert to fraction form
   10,065.99/13,890.48 = 5,589.42/x
3. Step 3: Cross multiply
   10,065.99x = 13,890.48 × 5,589.42
4. Step 4: Simplify right side
   10,065.99x = 77,639,726.72
5. Step 5: Solve for x
   x = 77,639,726.72/10,065.99
6. Step 6: Final answer
   x = 7,713.07