Finding the Fourth Proportional to 13,617.29, 18,791.72 and 7,567.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,617.29 : 18,791.72 = 7,567.50 : x
2. Step 2: Convert to fraction form
   13,617.29/18,791.72 = 7,567.50/x
3. Step 3: Cross multiply
   13,617.29x = 18,791.72 × 7,567.50
4. Step 4: Simplify right side
   13,617.29x = 142,206,341.10
5. Step 5: Solve for x
   x = 142,206,341.10/13,617.29
6. Step 6: Final answer
   x = 10,443.07