Finding the Fourth Proportional to 9,661.57, 13,333.18 and 5,412.95

Step by Step Solution

1. Step 1: Write the proportion equation
   9,661.57 : 13,333.18 = 5,412.95 : x
2. Step 2: Convert to fraction form
   9,661.57/13,333.18 = 5,412.95/x
3. Step 3: Cross multiply
   9,661.57x = 13,333.18 × 5,412.95
4. Step 4: Simplify right side
   9,661.57x = 72,171,770.02
5. Step 5: Solve for x
   x = 72,171,770.02/9,661.57
6. Step 6: Final answer
   x = 7,469.98