Finding the Fourth Proportional to 13,617.72, 18,791.82 and 7,567.68

Step by Step Solution

1. Step 1: Write the proportion equation
   13,617.72 : 18,791.82 = 7,567.68 : x
2. Step 2: Convert to fraction form
   13,617.72/18,791.82 = 7,567.68/x
3. Step 3: Cross multiply
   13,617.72x = 18,791.82 × 7,567.68
4. Step 4: Simplify right side
   13,617.72x = 142,210,480.38
5. Step 5: Solve for x
   x = 142,210,480.38/13,617.72
6. Step 6: Final answer
   x = 10,443.05