Finding the Fourth Proportional to 7,443.97, 10,272.05 and 4,086.75

Step by Step Solution

1. Step 1: Write the proportion equation
   7,443.97 : 10,272.05 = 4,086.75 : x
2. Step 2: Convert to fraction form
   7,443.97/10,272.05 = 4,086.75/x
3. Step 3: Cross multiply
   7,443.97x = 10,272.05 × 4,086.75
4. Step 4: Simplify right side
   7,443.97x = 41,979,333.75
5. Step 5: Solve for x
   x = 41,979,333.75/7,443.97
6. Step 6: Final answer
   x = 5,639.38