Finding the Fourth Proportional to 9,661.59, 13,333.28 and 5,469.75

Step by Step Solution

1. Step 1: Write the proportion equation
   9,661.59 : 13,333.28 = 5,469.75 : x
2. Step 2: Convert to fraction form
   9,661.59/13,333.28 = 5,469.75/x
3. Step 3: Cross multiply
   9,661.59x = 13,333.28 × 5,469.75
4. Step 4: Simplify right side
   9,661.59x = 72,929,680.93
5. Step 5: Solve for x
   x = 72,929,680.93/9,661.59
6. Step 6: Final answer
   x = 7,548.41