Finding the Fourth Proportional to 6,627.76, 9,145.71 and 3,643.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,627.76 : 9,145.71 = 3,643.72 : x
2. Step 2: Convert to fraction form
   6,627.76/9,145.71 = 3,643.72/x
3. Step 3: Cross multiply
   6,627.76x = 9,145.71 × 3,643.72
4. Step 4: Simplify right side
   6,627.76x = 33,324,383.58
5. Step 5: Solve for x
   x = 33,324,383.58/6,627.76
6. Step 6: Final answer
   x = 5,028.00