Finding the Fourth Proportional to 6,561.48, 9,054.46 and 3,728.12

Step by Step Solution

1. Step 1: Write the proportion equation
   6,561.48 : 9,054.46 = 3,728.12 : x
2. Step 2: Convert to fraction form
   6,561.48/9,054.46 = 3,728.12/x
3. Step 3: Cross multiply
   6,561.48x = 9,054.46 × 3,728.12
4. Step 4: Simplify right side
   6,561.48x = 33,756,113.42
5. Step 5: Solve for x
   x = 33,756,113.42/6,561.48
6. Step 6: Final answer
   x = 5,144.59