Finding the Fourth Proportional to 10,931.87, 16,406.54 and 5,668.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,931.87 : 16,406.54 = 5,668.38 : x
2. Step 2: Convert to fraction form
   10,931.87/16,406.54 = 5,668.38/x
3. Step 3: Cross multiply
   10,931.87x = 16,406.54 × 5,668.38
4. Step 4: Simplify right side
   10,931.87x = 92,998,392.83
5. Step 5: Solve for x
   x = 92,998,392.83/10,931.87
6. Step 6: Final answer
   x = 8,507.09