Finding the Fourth Proportional to 7,443.81, 10,271.81 and 4,086.61

Step by Step Solution

1. Step 1: Write the proportion equation
   7,443.81 : 10,271.81 = 4,086.61 : x
2. Step 2: Convert to fraction form
   7,443.81/10,271.81 = 4,086.61/x
3. Step 3: Cross multiply
   7,443.81x = 10,271.81 × 4,086.61
4. Step 4: Simplify right side
   7,443.81x = 41,976,881.46
5. Step 5: Solve for x
   x = 41,976,881.46/7,443.81
6. Step 6: Final answer
   x = 5,639.17