Finding the Fourth Proportional to 10,287.50, 14,196.85 and 5,571.89

Step by Step Solution

1. Step 1: Write the proportion equation
   10,287.50 : 14,196.85 = 5,571.89 : x
2. Step 2: Convert to fraction form
   10,287.50/14,196.85 = 5,571.89/x
3. Step 3: Cross multiply
   10,287.50x = 14,196.85 × 5,571.89
4. Step 4: Simplify right side
   10,287.50x = 79,103,215.56
5. Step 5: Solve for x
   x = 79,103,215.56/10,287.50
6. Step 6: Final answer
   x = 7,689.26