Finding the Fourth Proportional to 13,508.37, 18,641.75 and 7,540.49

Step by Step Solution

1. Step 1: Write the proportion equation
   13,508.37 : 18,641.75 = 7,540.49 : x
2. Step 2: Convert to fraction form
   13,508.37/18,641.75 = 7,540.49/x
3. Step 3: Cross multiply
   13,508.37x = 18,641.75 × 7,540.49
4. Step 4: Simplify right side
   13,508.37x = 140,567,929.46
5. Step 5: Solve for x
   x = 140,567,929.46/13,508.37
6. Step 6: Final answer
   x = 10,405.99