Finding the Fourth Proportional to 5,390.71, 8,087.27 and 1,642.82

Step by Step Solution

1. Step 1: Write the proportion equation
   5,390.71 : 8,087.27 = 1,642.82 : x
2. Step 2: Convert to fraction form
   5,390.71/8,087.27 = 1,642.82/x
3. Step 3: Cross multiply
   5,390.71x = 8,087.27 × 1,642.82
4. Step 4: Simplify right side
   5,390.71x = 13,285,953.23
5. Step 5: Solve for x
   x = 13,285,953.23/5,390.71
6. Step 6: Final answer
   x = 2,464.60