Finding the Fourth Proportional to 7,321.10, 10,982.72 and 2,126.30

Step by Step Solution

1. Step 1: Write the proportion equation
   7,321.10 : 10,982.72 = 2,126.30 : x
2. Step 2: Convert to fraction form
   7,321.10/10,982.72 = 2,126.30/x
3. Step 3: Cross multiply
   7,321.10x = 10,982.72 × 2,126.30
4. Step 4: Simplify right side
   7,321.10x = 23,352,557.54
5. Step 5: Solve for x
   x = 23,352,557.54/7,321.10
6. Step 6: Final answer
   x = 3,189.76