Finding the Fourth Proportional to 10,978.43, 15,146.75 and 6,727.29

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.43 : 15,146.75 = 6,727.29 : x
2. Step 2: Convert to fraction form
   10,978.43/15,146.75 = 6,727.29/x
3. Step 3: Cross multiply
   10,978.43x = 15,146.75 × 6,727.29
4. Step 4: Simplify right side
   10,978.43x = 101,896,579.81
5. Step 5: Solve for x
   x = 101,896,579.81/10,978.43
6. Step 6: Final answer
   x = 9,281.53