Finding the Fourth Proportional to 10,969.75, 15,140.69 and 7,571.53

Step by Step Solution

1. Step 1: Write the proportion equation
   10,969.75 : 15,140.69 = 7,571.53 : x
2. Step 2: Convert to fraction form
   10,969.75/15,140.69 = 7,571.53/x
3. Step 3: Cross multiply
   10,969.75x = 15,140.69 × 7,571.53
4. Step 4: Simplify right side
   10,969.75x = 114,638,188.56
5. Step 5: Solve for x
   x = 114,638,188.56/10,969.75
6. Step 6: Final answer
   x = 10,450.39