Finding the Fourth Proportional to 6,448.72, 9,678.56 and 3,529.08

Step by Step Solution

1. Step 1: Write the proportion equation
   6,448.72 : 9,678.56 = 3,529.08 : x
2. Step 2: Convert to fraction form
   6,448.72/9,678.56 = 3,529.08/x
3. Step 3: Cross multiply
   6,448.72x = 9,678.56 × 3,529.08
4. Step 4: Simplify right side
   6,448.72x = 34,156,412.52
5. Step 5: Solve for x
   x = 34,156,412.52/6,448.72
6. Step 6: Final answer
   x = 5,296.62