Finding the Fourth Proportional to 7,152.72, 9,869.95 and 3,965.93

Step by Step Solution

1. Step 1: Write the proportion equation
   7,152.72 : 9,869.95 = 3,965.93 : x
2. Step 2: Convert to fraction form
   7,152.72/9,869.95 = 3,965.93/x
3. Step 3: Cross multiply
   7,152.72x = 9,869.95 × 3,965.93
4. Step 4: Simplify right side
   7,152.72x = 39,143,530.80
5. Step 5: Solve for x
   x = 39,143,530.80/7,152.72
6. Step 6: Final answer
   x = 5,472.54