Finding the Fourth Proportional to 11,287.49, 15,574.55 and 7,308.09

Step by Step Solution

1. Step 1: Write the proportion equation
   11,287.49 : 15,574.55 = 7,308.09 : x
2. Step 2: Convert to fraction form
   11,287.49/15,574.55 = 7,308.09/x
3. Step 3: Cross multiply
   11,287.49x = 15,574.55 × 7,308.09
4. Step 4: Simplify right side
   11,287.49x = 113,820,176.57
5. Step 5: Solve for x
   x = 113,820,176.57/11,287.49
6. Step 6: Final answer
   x = 10,083.75