Finding the Fourth Proportional to 10,146.72, 13,995.56 and 8,818.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,146.72 : 13,995.56 = 8,818.16 : x
2. Step 2: Convert to fraction form
   10,146.72/13,995.56 = 8,818.16/x
3. Step 3: Cross multiply
   10,146.72x = 13,995.56 × 8,818.16
4. Step 4: Simplify right side
   10,146.72x = 123,415,087.37
5. Step 5: Solve for x
   x = 123,415,087.37/10,146.72
6. Step 6: Final answer
   x = 12,163.05