Finding the Fourth Proportional to 11,387.69, 17,057.53 and 7,225.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,387.69 : 17,057.53 = 7,225.50 : x
2. Step 2: Convert to fraction form
   11,387.69/17,057.53 = 7,225.50/x
3. Step 3: Cross multiply
   11,387.69x = 17,057.53 × 7,225.50
4. Step 4: Simplify right side
   11,387.69x = 123,249,146.89
5. Step 5: Solve for x
   x = 123,249,146.89/11,387.69
6. Step 6: Final answer
   x = 10,823.02