Finding the Fourth Proportional to 3,890.70, 5,369.69 and 2,474.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,890.70 : 5,369.69 = 2,474.53 : x
2. Step 2: Convert to fraction form
   3,890.70/5,369.69 = 2,474.53/x
3. Step 3: Cross multiply
   3,890.70x = 5,369.69 × 2,474.53
4. Step 4: Simplify right side
   3,890.70x = 13,287,419.77
5. Step 5: Solve for x
   x = 13,287,419.77/3,890.70
6. Step 6: Final answer
   x = 3,415.17