Finding the Fourth Proportional to 7,329.31, 10,991.23 and 2,945.28

Step by Step Solution

1. Step 1: Write the proportion equation
   7,329.31 : 10,991.23 = 2,945.28 : x
2. Step 2: Convert to fraction form
   7,329.31/10,991.23 = 2,945.28/x
3. Step 3: Cross multiply
   7,329.31x = 10,991.23 × 2,945.28
4. Step 4: Simplify right side
   7,329.31x = 32,372,249.89
5. Step 5: Solve for x
   x = 32,372,249.89/7,329.31
6. Step 6: Final answer
   x = 4,416.82