Finding the Fourth Proportional to 5,514.42, 7,609.72 and 3,156.40

Step by Step Solution

1. Step 1: Write the proportion equation
   5,514.42 : 7,609.72 = 3,156.40 : x
2. Step 2: Convert to fraction form
   5,514.42/7,609.72 = 3,156.40/x
3. Step 3: Cross multiply
   5,514.42x = 7,609.72 × 3,156.40
4. Step 4: Simplify right side
   5,514.42x = 24,019,320.21
5. Step 5: Solve for x
   x = 24,019,320.21/5,514.42
6. Step 6: Final answer
   x = 4,355.73