Finding the Fourth Proportional to 10,669.64, 16,001.69 and 3,171.43

Step by Step Solution

1. Step 1: Write the proportion equation
   10,669.64 : 16,001.69 = 3,171.43 : x
2. Step 2: Convert to fraction form
   10,669.64/16,001.69 = 3,171.43/x
3. Step 3: Cross multiply
   10,669.64x = 16,001.69 × 3,171.43
4. Step 4: Simplify right side
   10,669.64x = 50,748,243.86
5. Step 5: Solve for x
   x = 50,748,243.86/10,669.64
6. Step 6: Final answer
   x = 4,756.32