Finding the Fourth Proportional to 6,335.42, 8,742.40 and 3,540.38

Step by Step Solution

1. Step 1: Write the proportion equation
   6,335.42 : 8,742.40 = 3,540.38 : x
2. Step 2: Convert to fraction form
   6,335.42/8,742.40 = 3,540.38/x
3. Step 3: Cross multiply
   6,335.42x = 8,742.40 × 3,540.38
4. Step 4: Simplify right side
   6,335.42x = 30,951,365.55
5. Step 5: Solve for x
   x = 30,951,365.55/6,335.42
6. Step 6: Final answer
   x = 4,885.45