Finding the Fourth Proportional to 9,661.55, 13,332.18 and 5,412.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,661.55 : 13,332.18 = 5,412.27 : x
2. Step 2: Convert to fraction form
   9,661.55/13,332.18 = 5,412.27/x
3. Step 3: Cross multiply
   9,661.55x = 13,332.18 × 5,412.27
4. Step 4: Simplify right side
   9,661.55x = 72,157,357.85
5. Step 5: Solve for x
   x = 72,157,357.85/9,661.55
6. Step 6: Final answer
   x = 7,468.51