Finding the Fourth Proportional to 10,286.72, 14,195.69 and 5,571

Step by Step Solution

1. Step 1: Write the proportion equation
   10,286.72 : 14,195.69 = 5,571 : x
2. Step 2: Convert to fraction form
   10,286.72/14,195.69 = 5,571/x
3. Step 3: Cross multiply
   10,286.72x = 14,195.69 × 5,571
4. Step 4: Simplify right side
   10,286.72x = 79,084,188.99
5. Step 5: Solve for x
   x = 79,084,188.99/10,286.72
6. Step 6: Final answer
   x = 7,687.99