Finding the Fourth Proportional to 6,646.38, 9,171.76 and 3,662.15

Step by Step Solution

1. Step 1: Write the proportion equation
   6,646.38 : 9,171.76 = 3,662.15 : x
2. Step 2: Convert to fraction form
   6,646.38/9,171.76 = 3,662.15/x
3. Step 3: Cross multiply
   6,646.38x = 9,171.76 × 3,662.15
4. Step 4: Simplify right side
   6,646.38x = 33,588,360.88
5. Step 5: Solve for x
   x = 33,588,360.88/6,646.38
6. Step 6: Final answer
   x = 5,053.63