Finding the Fourth Proportional to 9,156.20, 12,635.52 and 4,964.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,156.20 : 12,635.52 = 4,964.42 : x
2. Step 2: Convert to fraction form
   9,156.20/12,635.52 = 4,964.42/x
3. Step 3: Cross multiply
   9,156.20x = 12,635.52 × 4,964.42
4. Step 4: Simplify right side
   9,156.20x = 62,728,028.20
5. Step 5: Solve for x
   x = 62,728,028.20/9,156.20
6. Step 6: Final answer
   x = 6,850.88