Finding the Fourth Proportional to 13,543.33, 18,689.83 and 7,574.61

Step by Step Solution

1. Step 1: Write the proportion equation
   13,543.33 : 18,689.83 = 7,574.61 : x
2. Step 2: Convert to fraction form
   13,543.33/18,689.83 = 7,574.61/x
3. Step 3: Cross multiply
   13,543.33x = 18,689.83 × 7,574.61
4. Step 4: Simplify right side
   13,543.33x = 141,568,143.38
5. Step 5: Solve for x
   x = 141,568,143.38/13,543.33
6. Step 6: Final answer
   x = 10,452.98