Finding the Fourth Proportional to 7,152.67, 9,870.71 and 3,966.49

Step by Step Solution

1. Step 1: Write the proportion equation
   7,152.67 : 9,870.71 = 3,966.49 : x
2. Step 2: Convert to fraction form
   7,152.67/9,870.71 = 3,966.49/x
3. Step 3: Cross multiply
   7,152.67x = 9,870.71 × 3,966.49
4. Step 4: Simplify right side
   7,152.67x = 39,152,072.51
5. Step 5: Solve for x
   x = 39,152,072.51/7,152.67
6. Step 6: Final answer
   x = 5,473.77