Finding the Fourth Proportional to 6,611.25, 9,123.81 and 3,958.15

Step by Step Solution

1. Step 1: Write the proportion equation
   6,611.25 : 9,123.81 = 3,958.15 : x
2. Step 2: Convert to fraction form
   6,611.25/9,123.81 = 3,958.15/x
3. Step 3: Cross multiply
   6,611.25x = 9,123.81 × 3,958.15
4. Step 4: Simplify right side
   6,611.25x = 36,113,408.55
5. Step 5: Solve for x
   x = 36,113,408.55/6,611.25
6. Step 6: Final answer
   x = 5,462.42