Finding the Fourth Proportional to 7,980.96, 11,976.56 and 3,874.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,980.96 : 11,976.56 = 3,874.72 : x
2. Step 2: Convert to fraction form
   7,980.96/11,976.56 = 3,874.72/x
3. Step 3: Cross multiply
   7,980.96x = 11,976.56 × 3,874.72
4. Step 4: Simplify right side
   7,980.96x = 46,405,816.56
5. Step 5: Solve for x
   x = 46,405,816.56/7,980.96
6. Step 6: Final answer
   x = 5,814.57