Finding the Fourth Proportional to 10,253.69, 15,367.85 and 7,287.41

Step by Step Solution

1. Step 1: Write the proportion equation
   10,253.69 : 15,367.85 = 7,287.41 : x
2. Step 2: Convert to fraction form
   10,253.69/15,367.85 = 7,287.41/x
3. Step 3: Cross multiply
   10,253.69x = 15,367.85 × 7,287.41
4. Step 4: Simplify right side
   10,253.69x = 111,991,710.49
5. Step 5: Solve for x
   x = 111,991,710.49/10,253.69
6. Step 6: Final answer
   x = 10,922.09