Finding the Fourth Proportional to 7,514.72, 11,274.96 and 3,131

Step by Step Solution

1. Step 1: Write the proportion equation
   7,514.72 : 11,274.96 = 3,131 : x
2. Step 2: Convert to fraction form
   7,514.72/11,274.96 = 3,131/x
3. Step 3: Cross multiply
   7,514.72x = 11,274.96 × 3,131
4. Step 4: Simplify right side
   7,514.72x = 35,301,899.76
5. Step 5: Solve for x
   x = 35,301,899.76/7,514.72
6. Step 6: Final answer
   x = 4,697.70