Finding the Fourth Proportional to 4,831.76, 7,249.37 and 2,980.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,831.76 : 7,249.37 = 2,980.72 : x
2. Step 2: Convert to fraction form
   4,831.76/7,249.37 = 2,980.72/x
3. Step 3: Cross multiply
   4,831.76x = 7,249.37 × 2,980.72
4. Step 4: Simplify right side
   4,831.76x = 21,608,336.30
5. Step 5: Solve for x
   x = 21,608,336.30/4,831.76
6. Step 6: Final answer
   x = 4,472.15