Finding the Fourth Proportional to 7,057.30, 9,738.18 and 3,913.42

Step by Step Solution

1. Step 1: Write the proportion equation
   7,057.30 : 9,738.18 = 3,913.42 : x
2. Step 2: Convert to fraction form
   7,057.30/9,738.18 = 3,913.42/x
3. Step 3: Cross multiply
   7,057.30x = 9,738.18 × 3,913.42
4. Step 4: Simplify right side
   7,057.30x = 38,109,588.38
5. Step 5: Solve for x
   x = 38,109,588.38/7,057.30
6. Step 6: Final answer
   x = 5,400.02