Finding the Fourth Proportional to 7,443.81, 10,272.17 and 4,086.81

Step by Step Solution

1. Step 1: Write the proportion equation
   7,443.81 : 10,272.17 = 4,086.81 : x
2. Step 2: Convert to fraction form
   7,443.81/10,272.17 = 4,086.81/x
3. Step 3: Cross multiply
   7,443.81x = 10,272.17 × 4,086.81
4. Step 4: Simplify right side
   7,443.81x = 41,980,386.64
5. Step 5: Solve for x
   x = 41,980,386.64/7,443.81
6. Step 6: Final answer
   x = 5,639.64