Finding the Fourth Proportional to 13,518.09, 18,654.17 and 7,550.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,518.09 : 18,654.17 = 7,550.15 : x
2. Step 2: Convert to fraction form
   13,518.09/18,654.17 = 7,550.15/x
3. Step 3: Cross multiply
   13,518.09x = 18,654.17 × 7,550.15
4. Step 4: Simplify right side
   13,518.09x = 140,841,650.60
5. Step 5: Solve for x
   x = 140,841,650.60/13,518.09
6. Step 6: Final answer
   x = 10,418.75