Finding the Fourth Proportional to 10,976.77, 16,458.31 and 3,580.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,976.77 : 16,458.31 = 3,580.15 : x
2. Step 2: Convert to fraction form
   10,976.77/16,458.31 = 3,580.15/x
3. Step 3: Cross multiply
   10,976.77x = 16,458.31 × 3,580.15
4. Step 4: Simplify right side
   10,976.77x = 58,923,218.55
5. Step 5: Solve for x
   x = 58,923,218.55/10,976.77
6. Step 6: Final answer
   x = 5,367.99