Finding the Fourth Proportional to 6,647.50, 9,174.78 and 3,853

Step by Step Solution

1. Step 1: Write the proportion equation
   6,647.50 : 9,174.78 = 3,853 : x
2. Step 2: Convert to fraction form
   6,647.50/9,174.78 = 3,853/x
3. Step 3: Cross multiply
   6,647.50x = 9,174.78 × 3,853
4. Step 4: Simplify right side
   6,647.50x = 35,350,427.34
5. Step 5: Solve for x
   x = 35,350,427.34/6,647.50
6. Step 6: Final answer
   x = 5,317.85