Finding the Fourth Proportional to 6,807.34, 10,215.33 and 3,689.47

Step by Step Solution

1. Step 1: Write the proportion equation
   6,807.34 : 10,215.33 = 3,689.47 : x
2. Step 2: Convert to fraction form
   6,807.34/10,215.33 = 3,689.47/x
3. Step 3: Cross multiply
   6,807.34x = 10,215.33 × 3,689.47
4. Step 4: Simplify right side
   6,807.34x = 37,689,153.58
5. Step 5: Solve for x
   x = 37,689,153.58/6,807.34
6. Step 6: Final answer
   x = 5,536.55