Finding the Fourth Proportional to 10,995.56, 16,490.46 and 5,146.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,995.56 : 16,490.46 = 5,146.28 : x
2. Step 2: Convert to fraction form
   10,995.56/16,490.46 = 5,146.28/x
3. Step 3: Cross multiply
   10,995.56x = 16,490.46 × 5,146.28
4. Step 4: Simplify right side
   10,995.56x = 84,864,524.49
5. Step 5: Solve for x
   x = 84,864,524.49/10,995.56
6. Step 6: Final answer
   x = 7,718.07