Finding the Fourth Proportional to 7,343.80, 10,134.42 and 3,986.59

Step by Step Solution

1. Step 1: Write the proportion equation
   7,343.80 : 10,134.42 = 3,986.59 : x
2. Step 2: Convert to fraction form
   7,343.80/10,134.42 = 3,986.59/x
3. Step 3: Cross multiply
   7,343.80x = 10,134.42 × 3,986.59
4. Step 4: Simplify right side
   7,343.80x = 40,401,756.14
5. Step 5: Solve for x
   x = 40,401,756.14/7,343.80
6. Step 6: Final answer
   x = 5,501.48