Finding the Fourth Proportional to 3,012.38, 4,514.72 and 2,620.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,012.38 : 4,514.72 = 2,620.76 : x
2. Step 2: Convert to fraction form
   3,012.38/4,514.72 = 2,620.76/x
3. Step 3: Cross multiply
   3,012.38x = 4,514.72 × 2,620.76
4. Step 4: Simplify right side
   3,012.38x = 11,831,997.59
5. Step 5: Solve for x
   x = 11,831,997.59/3,012.38
6. Step 6: Final answer
   x = 3,927.79