Finding the Fourth Proportional to 9,540.99, 13,166.55 and 5,561.33

Step by Step Solution

1. Step 1: Write the proportion equation
   9,540.99 : 13,166.55 = 5,561.33 : x
2. Step 2: Convert to fraction form
   9,540.99/13,166.55 = 5,561.33/x
3. Step 3: Cross multiply
   9,540.99x = 13,166.55 × 5,561.33
4. Step 4: Simplify right side
   9,540.99x = 73,223,463.68
5. Step 5: Solve for x
   x = 73,223,463.68/9,540.99
6. Step 6: Final answer
   x = 7,674.62