Finding the Fourth Proportional to 10,669.50, 16,010.40 and 5,739.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,669.50 : 16,010.40 = 5,739.30 : x
2. Step 2: Convert to fraction form
   10,669.50/16,010.40 = 5,739.30/x
3. Step 3: Cross multiply
   10,669.50x = 16,010.40 × 5,739.30
4. Step 4: Simplify right side
   10,669.50x = 91,888,488.72
5. Step 5: Solve for x
   x = 91,888,488.72/10,669.50
6. Step 6: Final answer
   x = 8,612.26