Finding the Fourth Proportional to 8,987.45, 12,399.02 and 5,963.99

Step by Step Solution

1. Step 1: Write the proportion equation
   8,987.45 : 12,399.02 = 5,963.99 : x
2. Step 2: Convert to fraction form
   8,987.45/12,399.02 = 5,963.99/x
3. Step 3: Cross multiply
   8,987.45x = 12,399.02 × 5,963.99
4. Step 4: Simplify right side
   8,987.45x = 73,947,677.20
5. Step 5: Solve for x
   x = 73,947,677.20/8,987.45
6. Step 6: Final answer
   x = 8,227.89