Finding the Fourth Proportional to 6,801.72, 9,386.12 and 3,969.15

Step by Step Solution

1. Step 1: Write the proportion equation
   6,801.72 : 9,386.12 = 3,969.15 : x
2. Step 2: Convert to fraction form
   6,801.72/9,386.12 = 3,969.15/x
3. Step 3: Cross multiply
   6,801.72x = 9,386.12 × 3,969.15
4. Step 4: Simplify right side
   6,801.72x = 37,254,898.35
5. Step 5: Solve for x
   x = 37,254,898.35/6,801.72
6. Step 6: Final answer
   x = 5,477.28