Finding the Fourth Proportional to 3,012.69, 4,496.61 and 2,938.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,012.69 : 4,496.61 = 2,938.88 : x
2. Step 2: Convert to fraction form
   3,012.69/4,496.61 = 2,938.88/x
3. Step 3: Cross multiply
   3,012.69x = 4,496.61 × 2,938.88
4. Step 4: Simplify right side
   3,012.69x = 13,215,019.46
5. Step 5: Solve for x
   x = 13,215,019.46/3,012.69
6. Step 6: Final answer
   x = 4,386.45