Finding the Fourth Proportional to 10,964.18, 16,433.94 and 5,405.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,964.18 : 16,433.94 = 5,405.76 : x
2. Step 2: Convert to fraction form
   10,964.18/16,433.94 = 5,405.76/x
3. Step 3: Cross multiply
   10,964.18x = 16,433.94 × 5,405.76
4. Step 4: Simplify right side
   10,964.18x = 88,837,935.49
5. Step 5: Solve for x
   x = 88,837,935.49/10,964.18
6. Step 6: Final answer
   x = 8,102.56