Finding the Fourth Proportional to 5,109.48, 7,667.17 and 2,147.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,109.48 : 7,667.17 = 2,147.69 : x
2. Step 2: Convert to fraction form
   5,109.48/7,667.17 = 2,147.69/x
3. Step 3: Cross multiply
   5,109.48x = 7,667.17 × 2,147.69
4. Step 4: Simplify right side
   5,109.48x = 16,466,687.09
5. Step 5: Solve for x
   x = 16,466,687.09/5,109.48
6. Step 6: Final answer
   x = 3,222.77