Finding the Fourth Proportional to 7,101.89, 9,800.94 and 3,958.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,101.89 : 9,800.94 = 3,958.10 : x
2. Step 2: Convert to fraction form
   7,101.89/9,800.94 = 3,958.10/x
3. Step 3: Cross multiply
   7,101.89x = 9,800.94 × 3,958.10
4. Step 4: Simplify right side
   7,101.89x = 38,793,031.82
5. Step 5: Solve for x
   x = 38,793,031.82/7,101.89
6. Step 6: Final answer
   x = 5,462.36