Finding the Fourth Proportional to 10,931.04, 16,404.51 and 4,359.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,931.04 : 16,404.51 = 4,359.09 : x
2. Step 2: Convert to fraction form
   10,931.04/16,404.51 = 4,359.09/x
3. Step 3: Cross multiply
   10,931.04x = 16,404.51 × 4,359.09
4. Step 4: Simplify right side
   10,931.04x = 71,508,735.50
5. Step 5: Solve for x
   x = 71,508,735.50/10,931.04
6. Step 6: Final answer
   x = 6,541.81