Finding the Fourth Proportional to 10,287.39, 14,196.59 and 5,571.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,287.39 : 14,196.59 = 5,571.69 : x
2. Step 2: Convert to fraction form
   10,287.39/14,196.59 = 5,571.69/x
3. Step 3: Cross multiply
   10,287.39x = 14,196.59 × 5,571.69
4. Step 4: Simplify right side
   10,287.39x = 79,098,970.68
5. Step 5: Solve for x
   x = 79,098,970.68/10,287.39
6. Step 6: Final answer
   x = 7,688.93