Finding the Fourth Proportional to 6,630.57, 9,146.39 and 4,142.25

Step by Step Solution

1. Step 1: Write the proportion equation
   6,630.57 : 9,146.39 = 4,142.25 : x
2. Step 2: Convert to fraction form
   6,630.57/9,146.39 = 4,142.25/x
3. Step 3: Cross multiply
   6,630.57x = 9,146.39 × 4,142.25
4. Step 4: Simplify right side
   6,630.57x = 37,886,613.27
5. Step 5: Solve for x
   x = 37,886,613.27/6,630.57
6. Step 6: Final answer
   x = 5,713.93