Finding the Fourth Proportional to 7,443.50, 10,272.31 and 4,086.45

Step by Step Solution

1. Step 1: Write the proportion equation
   7,443.50 : 10,272.31 = 4,086.45 : x
2. Step 2: Convert to fraction form
   7,443.50/10,272.31 = 4,086.45/x
3. Step 3: Cross multiply
   7,443.50x = 10,272.31 × 4,086.45
4. Step 4: Simplify right side
   7,443.50x = 41,977,270.98
5. Step 5: Solve for x
   x = 41,977,270.98/7,443.50
6. Step 6: Final answer
   x = 5,639.46