Finding the Fourth Proportional to 13,514.78, 18,648.54 and 7,545.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,514.78 : 18,648.54 = 7,545.32 : x
2. Step 2: Convert to fraction form
   13,514.78/18,648.54 = 7,545.32/x
3. Step 3: Cross multiply
   13,514.78x = 18,648.54 × 7,545.32
4. Step 4: Simplify right side
   13,514.78x = 140,709,201.83
5. Step 5: Solve for x
   x = 140,709,201.83/13,514.78
6. Step 6: Final answer
   x = 10,411.51