Finding the Fourth Proportional to 10,709.65, 16,069.97 and 5,167.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,709.65 : 16,069.97 = 5,167.72 : x
2. Step 2: Convert to fraction form
   10,709.65/16,069.97 = 5,167.72/x
3. Step 3: Cross multiply
   10,709.65x = 16,069.97 × 5,167.72
4. Step 4: Simplify right side
   10,709.65x = 83,045,105.37
5. Step 5: Solve for x
   x = 83,045,105.37/10,709.65
6. Step 6: Final answer
   x = 7,754.23