Finding the Fourth Proportional to 5,109.72, 7,679.16 and 2,514.48

Step by Step Solution

1. Step 1: Write the proportion equation
   5,109.72 : 7,679.16 = 2,514.48 : x
2. Step 2: Convert to fraction form
   5,109.72/7,679.16 = 2,514.48/x
3. Step 3: Cross multiply
   5,109.72x = 7,679.16 × 2,514.48
4. Step 4: Simplify right side
   5,109.72x = 19,309,094.24
5. Step 5: Solve for x
   x = 19,309,094.24/5,109.72
6. Step 6: Final answer
   x = 3,778.89