Finding the Fourth Proportional to 6,865.62, 9,474.56 and 3,721.82

Step by Step Solution

1. Step 1: Write the proportion equation
   6,865.62 : 9,474.56 = 3,721.82 : x
2. Step 2: Convert to fraction form
   6,865.62/9,474.56 = 3,721.82/x
3. Step 3: Cross multiply
   6,865.62x = 9,474.56 × 3,721.82
4. Step 4: Simplify right side
   6,865.62x = 35,262,606.90
5. Step 5: Solve for x
   x = 35,262,606.90/6,865.62
6. Step 6: Final answer
   x = 5,136.11