Finding the Fourth Proportional to 7,120.38, 9,826.32 and 3,976.77

Step by Step Solution

1. Step 1: Write the proportion equation
   7,120.38 : 9,826.32 = 3,976.77 : x
2. Step 2: Convert to fraction form
   7,120.38/9,826.32 = 3,976.77/x
3. Step 3: Cross multiply
   7,120.38x = 9,826.32 × 3,976.77
4. Step 4: Simplify right side
   7,120.38x = 39,077,014.59
5. Step 5: Solve for x
   x = 39,077,014.59/7,120.38
6. Step 6: Final answer
   x = 5,488.05