Finding the Fourth Proportional to 3,428.82, 5,118.39 and 3,013.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,428.82 : 5,118.39 = 3,013.61 : x
2. Step 2: Convert to fraction form
   3,428.82/5,118.39 = 3,013.61/x
3. Step 3: Cross multiply
   3,428.82x = 5,118.39 × 3,013.61
4. Step 4: Simplify right side
   3,428.82x = 15,424,805.70
5. Step 5: Solve for x
   x = 15,424,805.70/3,428.82
6. Step 6: Final answer
   x = 4,498.58