Finding the Fourth Proportional to 10,906.56, 16,356.72 and 3,979.44

Step by Step Solution

1. Step 1: Write the proportion equation
   10,906.56 : 16,356.72 = 3,979.44 : x
2. Step 2: Convert to fraction form
   10,906.56/16,356.72 = 3,979.44/x
3. Step 3: Cross multiply
   10,906.56x = 16,356.72 × 3,979.44
4. Step 4: Simplify right side
   10,906.56x = 65,090,585.84
5. Step 5: Solve for x
   x = 65,090,585.84/10,906.56
6. Step 6: Final answer
   x = 5,968.02