Finding the Fourth Proportional to 6,636.18, 9,157.70 and 3,910.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,636.18 : 9,157.70 = 3,910.72 : x
2. Step 2: Convert to fraction form
   6,636.18/9,157.70 = 3,910.72/x
3. Step 3: Cross multiply
   6,636.18x = 9,157.70 × 3,910.72
4. Step 4: Simplify right side
   6,636.18x = 35,813,200.54
5. Step 5: Solve for x
   x = 35,813,200.54/6,636.18
6. Step 6: Final answer
   x = 5,396.66