Finding the Fourth Proportional to 5,518.72, 7,611.33 and 4,456.18

Step by Step Solution

1. Step 1: Write the proportion equation
   5,518.72 : 7,611.33 = 4,456.18 : x
2. Step 2: Convert to fraction form
   5,518.72/7,611.33 = 4,456.18/x
3. Step 3: Cross multiply
   5,518.72x = 7,611.33 × 4,456.18
4. Step 4: Simplify right side
   5,518.72x = 33,917,456.52
5. Step 5: Solve for x
   x = 33,917,456.52/5,518.72
6. Step 6: Final answer
   x = 6,145.89