Finding the Fourth Proportional to 6,456.72, 9,686.76 and 1,839.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,456.72 : 9,686.76 = 1,839.72 : x
2. Step 2: Convert to fraction form
   6,456.72/9,686.76 = 1,839.72/x
3. Step 3: Cross multiply
   6,456.72x = 9,686.76 × 1,839.72
4. Step 4: Simplify right side
   6,456.72x = 17,820,926.11
5. Step 5: Solve for x
   x = 17,820,926.11/6,456.72
6. Step 6: Final answer
   x = 2,760.06