Finding the Fourth Proportional to 13,513.76, 18,649 and 7,545.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,513.76 : 18,649 = 7,545.42 : x
2. Step 2: Convert to fraction form
   13,513.76/18,649 = 7,545.42/x
3. Step 3: Cross multiply
   13,513.76x = 18,649 × 7,545.42
4. Step 4: Simplify right side
   13,513.76x = 140,714,537.58
5. Step 5: Solve for x
   x = 140,714,537.58/13,513.76
6. Step 6: Final answer
   x = 10,412.69