Finding the Fourth Proportional to 10,976.15, 16,464.18 and 4,397.63

Step by Step Solution

1. Step 1: Write the proportion equation
   10,976.15 : 16,464.18 = 4,397.63 : x
2. Step 2: Convert to fraction form
   10,976.15/16,464.18 = 4,397.63/x
3. Step 3: Cross multiply
   10,976.15x = 16,464.18 × 4,397.63
4. Step 4: Simplify right side
   10,976.15x = 72,403,371.89
5. Step 5: Solve for x
   x = 72,403,371.89/10,976.15
6. Step 6: Final answer
   x = 6,596.43