Finding the Fourth Proportional to 7,321.50, 10,983.65 and 2,939.31

Step by Step Solution

1. Step 1: Write the proportion equation
   7,321.50 : 10,983.65 = 2,939.31 : x
2. Step 2: Convert to fraction form
   7,321.50/10,983.65 = 2,939.31/x
3. Step 3: Cross multiply
   7,321.50x = 10,983.65 × 2,939.31
4. Step 4: Simplify right side
   7,321.50x = 32,284,337.58
5. Step 5: Solve for x
   x = 32,284,337.58/7,321.50
6. Step 6: Final answer
   x = 4,409.53