Finding the Fourth Proportional to 7,078.10, 10,608.06 and 2,921.02

Step by Step Solution

1. Step 1: Write the proportion equation
   7,078.10 : 10,608.06 = 2,921.02 : x
2. Step 2: Convert to fraction form
   7,078.10/10,608.06 = 2,921.02/x
3. Step 3: Cross multiply
   7,078.10x = 10,608.06 × 2,921.02
4. Step 4: Simplify right side
   7,078.10x = 30,986,384.22
5. Step 5: Solve for x
   x = 30,986,384.22/7,078.10
6. Step 6: Final answer
   x = 4,377.79