Finding the Fourth Proportional to 7,152.52, 9,870.17 and 3,965.80

Step by Step Solution

1. Step 1: Write the proportion equation
   7,152.52 : 9,870.17 = 3,965.80 : x
2. Step 2: Convert to fraction form
   7,152.52/9,870.17 = 3,965.80/x
3. Step 3: Cross multiply
   7,152.52x = 9,870.17 × 3,965.80
4. Step 4: Simplify right side
   7,152.52x = 39,143,120.19
5. Step 5: Solve for x
   x = 39,143,120.19/7,152.52
6. Step 6: Final answer
   x = 5,472.63