Finding the Fourth Proportional to 6,789.71, 10,186.15 and 2,109.48

Step by Step Solution

1. Step 1: Write the proportion equation
   6,789.71 : 10,186.15 = 2,109.48 : x
2. Step 2: Convert to fraction form
   6,789.71/10,186.15 = 2,109.48/x
3. Step 3: Cross multiply
   6,789.71x = 10,186.15 × 2,109.48
4. Step 4: Simplify right side
   6,789.71x = 21,487,479.70
5. Step 5: Solve for x
   x = 21,487,479.70/6,789.71
6. Step 6: Final answer
   x = 3,164.71