Finding the Fourth Proportional to 13,513.50, 18,648.42 and 7,545.26

Step by Step Solution

1. Step 1: Write the proportion equation
   13,513.50 : 18,648.42 = 7,545.26 : x
2. Step 2: Convert to fraction form
   13,513.50/18,648.42 = 7,545.26/x
3. Step 3: Cross multiply
   13,513.50x = 18,648.42 × 7,545.26
4. Step 4: Simplify right side
   13,513.50x = 140,707,084.25
5. Step 5: Solve for x
   x = 140,707,084.25/13,513.50
6. Step 6: Final answer
   x = 10,412.33