Finding the Fourth Proportional to 3,931.47, 5,424.42 and 2,338.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,931.47 : 5,424.42 = 2,338.02 : x
2. Step 2: Convert to fraction form
   3,931.47/5,424.42 = 2,338.02/x
3. Step 3: Cross multiply
   3,931.47x = 5,424.42 × 2,338.02
4. Step 4: Simplify right side
   3,931.47x = 12,682,402.45
5. Step 5: Solve for x
   x = 12,682,402.45/3,931.47
6. Step 6: Final answer
   x = 3,225.87