Finding the Fourth Proportional to 6,747.82, 10,128.20 and 3,287.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,747.82 : 10,128.20 = 3,287.50 : x
2. Step 2: Convert to fraction form
   6,747.82/10,128.20 = 3,287.50/x
3. Step 3: Cross multiply
   6,747.82x = 10,128.20 × 3,287.50
4. Step 4: Simplify right side
   6,747.82x = 33,296,457.50
5. Step 5: Solve for x
   x = 33,296,457.50/6,747.82
6. Step 6: Final answer
   x = 4,934.40