Finding the Fourth Proportional to 10,340.72, 15,508.78 and 2,945.04

Step by Step Solution

1. Step 1: Write the proportion equation
   10,340.72 : 15,508.78 = 2,945.04 : x
2. Step 2: Convert to fraction form
   10,340.72/15,508.78 = 2,945.04/x
3. Step 3: Cross multiply
   10,340.72x = 15,508.78 × 2,945.04
4. Step 4: Simplify right side
   10,340.72x = 45,673,977.45
5. Step 5: Solve for x
   x = 45,673,977.45/10,340.72
6. Step 6: Final answer
   x = 4,416.90