Finding the Fourth Proportional to 8,002.67, 11,989.42 and 5,899.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,002.67 : 11,989.42 = 5,899.50 : x
2. Step 2: Convert to fraction form
   8,002.67/11,989.42 = 5,899.50/x
3. Step 3: Cross multiply
   8,002.67x = 11,989.42 × 5,899.50
4. Step 4: Simplify right side
   8,002.67x = 70,731,568.54
5. Step 5: Solve for x
   x = 70,731,568.54/8,002.67
6. Step 6: Final answer
   x = 8,838.50