Finding the Fourth Proportional to 10,109, 13,949.88 and 5,571.53

Step by Step Solution

1. Step 1: Write the proportion equation
   10,109 : 13,949.88 = 5,571.53 : x
2. Step 2: Convert to fraction form
   10,109/13,949.88 = 5,571.53/x
3. Step 3: Cross multiply
   10,109x = 13,949.88 × 5,571.53
4. Step 4: Simplify right side
   10,109x = 77,722,174.92
5. Step 5: Solve for x
   x = 77,722,174.92/10,109
6. Step 6: Final answer
   x = 7,688.41