Finding the Fourth Proportional to 7,443.71, 10,272.45 and 4,086.84

Step by Step Solution

1. Step 1: Write the proportion equation
   7,443.71 : 10,272.45 = 4,086.84 : x
2. Step 2: Convert to fraction form
   7,443.71/10,272.45 = 4,086.84/x
3. Step 3: Cross multiply
   7,443.71x = 10,272.45 × 4,086.84
4. Step 4: Simplify right side
   7,443.71x = 41,981,859.56
5. Step 5: Solve for x
   x = 41,981,859.56/7,443.71
6. Step 6: Final answer
   x = 5,639.91