Finding the Fourth Proportional to 7,443.31, 10,271.12 and 4,086.11

Step by Step Solution

1. Step 1: Write the proportion equation
   7,443.31 : 10,271.12 = 4,086.11 : x
2. Step 2: Convert to fraction form
   7,443.31/10,271.12 = 4,086.11/x
3. Step 3: Cross multiply
   7,443.31x = 10,271.12 × 4,086.11
4. Step 4: Simplify right side
   7,443.31x = 41,968,926.14
5. Step 5: Solve for x
   x = 41,968,926.14/7,443.31
6. Step 6: Final answer
   x = 5,638.48