Finding the Fourth Proportional to 9,518.09, 13,136.30 and 5,540.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,518.09 : 13,136.30 = 5,540.48 : x
2. Step 2: Convert to fraction form
   9,518.09/13,136.30 = 5,540.48/x
3. Step 3: Cross multiply
   9,518.09x = 13,136.30 × 5,540.48
4. Step 4: Simplify right side
   9,518.09x = 72,781,407.42
5. Step 5: Solve for x
   x = 72,781,407.42/9,518.09
6. Step 6: Final answer
   x = 7,646.64