Finding the Fourth Proportional to 6,601.99, 9,109.88 and 3,948.43

Step by Step Solution

1. Step 1: Write the proportion equation
   6,601.99 : 9,109.88 = 3,948.43 : x
2. Step 2: Convert to fraction form
   6,601.99/9,109.88 = 3,948.43/x
3. Step 3: Cross multiply
   6,601.99x = 9,109.88 × 3,948.43
4. Step 4: Simplify right side
   6,601.99x = 35,969,723.49
5. Step 5: Solve for x
   x = 35,969,723.49/6,601.99
6. Step 6: Final answer
   x = 5,448.32