Finding the Fourth Proportional to 6,631.45, 9,146.72 and 5,629.84

Step by Step Solution

1. Step 1: Write the proportion equation
   6,631.45 : 9,146.72 = 5,629.84 : x
2. Step 2: Convert to fraction form
   6,631.45/9,146.72 = 5,629.84/x
3. Step 3: Cross multiply
   6,631.45x = 9,146.72 × 5,629.84
4. Step 4: Simplify right side
   6,631.45x = 51,494,561.33
5. Step 5: Solve for x
   x = 51,494,561.33/6,631.45
6. Step 6: Final answer
   x = 7,765.20