Finding the Fourth Proportional to 5,521.42, 7,616.19 and 3,946.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,521.42 : 7,616.19 = 3,946.78 : x
2. Step 2: Convert to fraction form
   5,521.42/7,616.19 = 3,946.78/x
3. Step 3: Cross multiply
   5,521.42x = 7,616.19 × 3,946.78
4. Step 4: Simplify right side
   5,521.42x = 30,059,426.37
5. Step 5: Solve for x
   x = 30,059,426.37/5,521.42
6. Step 6: Final answer
   x = 5,444.15