Finding the Fourth Proportional to 10,514.57, 15,740.34 and 10,140.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,514.57 : 15,740.34 = 10,140.72 : x
2. Step 2: Convert to fraction form
   10,514.57/15,740.34 = 10,140.72/x
3. Step 3: Cross multiply
   10,514.57x = 15,740.34 × 10,140.72
4. Step 4: Simplify right side
   10,514.57x = 159,618,301.94
5. Step 5: Solve for x
   x = 159,618,301.94/10,514.57
6. Step 6: Final answer
   x = 15,180.68