Finding the Fourth Proportional to 3,953.71, 5,899.87 and 3,428.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,953.71 : 5,899.87 = 3,428.83 : x
2. Step 2: Convert to fraction form
   3,953.71/5,899.87 = 3,428.83/x
3. Step 3: Cross multiply
   3,953.71x = 5,899.87 × 3,428.83
4. Step 4: Simplify right side
   3,953.71x = 20,229,651.25
5. Step 5: Solve for x
   x = 20,229,651.25/3,953.71
6. Step 6: Final answer
   x = 5,116.62