Finding the Fourth Proportional to 7,152.41, 9,870.91 and 3,966.71

Step by Step Solution

1. Step 1: Write the proportion equation
   7,152.41 : 9,870.91 = 3,966.71 : x
2. Step 2: Convert to fraction form
   7,152.41/9,870.91 = 3,966.71/x
3. Step 3: Cross multiply
   7,152.41x = 9,870.91 × 3,966.71
4. Step 4: Simplify right side
   7,152.41x = 39,154,978.13
5. Step 5: Solve for x
   x = 39,154,978.13/7,152.41
6. Step 6: Final answer
   x = 5,474.38