Finding the Fourth Proportional to 5,518.72, 7,616.12 and 3,394.37

Step by Step Solution

1. Step 1: Write the proportion equation
   5,518.72 : 7,616.12 = 3,394.37 : x
2. Step 2: Convert to fraction form
   5,518.72/7,616.12 = 3,394.37/x
3. Step 3: Cross multiply
   5,518.72x = 7,616.12 × 3,394.37
4. Step 4: Simplify right side
   5,518.72x = 25,851,931.31
5. Step 5: Solve for x
   x = 25,851,931.31/5,518.72
6. Step 6: Final answer
   x = 4,684.41