Finding the Fourth Proportional to 3,105.09, 4,649.72 and 3,012.75

Step by Step Solution

1. Step 1: Write the proportion equation
   3,105.09 : 4,649.72 = 3,012.75 : x
2. Step 2: Convert to fraction form
   3,105.09/4,649.72 = 3,012.75/x
3. Step 3: Cross multiply
   3,105.09x = 4,649.72 × 3,012.75
4. Step 4: Simplify right side
   3,105.09x = 14,008,428.87
5. Step 5: Solve for x
   x = 14,008,428.87/3,105.09
6. Step 6: Final answer
   x = 4,511.44