Finding the Fourth Proportional to 6,789.34, 9,368.89 and 3,957.17

Step by Step Solution

1. Step 1: Write the proportion equation
   6,789.34 : 9,368.89 = 3,957.17 : x
2. Step 2: Convert to fraction form
   6,789.34/9,368.89 = 3,957.17/x
3. Step 3: Cross multiply
   6,789.34x = 9,368.89 × 3,957.17
4. Step 4: Simplify right side
   6,789.34x = 37,074,270.66
5. Step 5: Solve for x
   x = 37,074,270.66/6,789.34
6. Step 6: Final answer
   x = 5,460.66