Finding the Fourth Proportional to 5,109.17, 7,647.33 and 3,456.62

Step by Step Solution

1. Step 1: Write the proportion equation
   5,109.17 : 7,647.33 = 3,456.62 : x
2. Step 2: Convert to fraction form
   5,109.17/7,647.33 = 3,456.62/x
3. Step 3: Cross multiply
   5,109.17x = 7,647.33 × 3,456.62
4. Step 4: Simplify right side
   5,109.17x = 26,433,913.82
5. Step 5: Solve for x
   x = 26,433,913.82/5,109.17
6. Step 6: Final answer
   x = 5,173.82