Finding the Fourth Proportional to 6,404.10, 9,587.48 and 3,931.43

Step by Step Solution

1. Step 1: Write the proportion equation
   6,404.10 : 9,587.48 = 3,931.43 : x
2. Step 2: Convert to fraction form
   6,404.10/9,587.48 = 3,931.43/x
3. Step 3: Cross multiply
   6,404.10x = 9,587.48 × 3,931.43
4. Step 4: Simplify right side
   6,404.10x = 37,692,474.85
5. Step 5: Solve for x
   x = 37,692,474.85/6,404.10
6. Step 6: Final answer
   x = 5,885.68