Finding the Fourth Proportional to 7,152.84, 9,871.22 and 3,966.12

Step by Step Solution

1. Step 1: Write the proportion equation
   7,152.84 : 9,871.22 = 3,966.12 : x
2. Step 2: Convert to fraction form
   7,152.84/9,871.22 = 3,966.12/x
3. Step 3: Cross multiply
   7,152.84x = 9,871.22 × 3,966.12
4. Step 4: Simplify right side
   7,152.84x = 39,150,443.07
5. Step 5: Solve for x
   x = 39,150,443.07/7,152.84
6. Step 6: Final answer
   x = 5,473.41