Finding the Fourth Proportional to 6,638.42, 9,157.20 and 4,150.10

Step by Step Solution

1. Step 1: Write the proportion equation
   6,638.42 : 9,157.20 = 4,150.10 : x
2. Step 2: Convert to fraction form
   6,638.42/9,157.20 = 4,150.10/x
3. Step 3: Cross multiply
   6,638.42x = 9,157.20 × 4,150.10
4. Step 4: Simplify right side
   6,638.42x = 38,003,295.72
5. Step 5: Solve for x
   x = 38,003,295.72/6,638.42
6. Step 6: Final answer
   x = 5,724.75