Finding the Fourth Proportional to 7,321.27, 10,980.76 and 2,390.89

Step by Step Solution

1. Step 1: Write the proportion equation
   7,321.27 : 10,980.76 = 2,390.89 : x
2. Step 2: Convert to fraction form
   7,321.27/10,980.76 = 2,390.89/x
3. Step 3: Cross multiply
   7,321.27x = 10,980.76 × 2,390.89
4. Step 4: Simplify right side
   7,321.27x = 26,253,789.28
5. Step 5: Solve for x
   x = 26,253,789.28/7,321.27
6. Step 6: Final answer
   x = 3,585.96