Finding the Fourth Proportional to 5,385.39, 8,078.69 and 2,462.91

Step by Step Solution

1. Step 1: Write the proportion equation
   5,385.39 : 8,078.69 = 2,462.91 : x
2. Step 2: Convert to fraction form
   5,385.39/8,078.69 = 2,462.91/x
3. Step 3: Cross multiply
   5,385.39x = 8,078.69 × 2,462.91
4. Step 4: Simplify right side
   5,385.39x = 19,897,048.40
5. Step 5: Solve for x
   x = 19,897,048.40/5,385.39
6. Step 6: Final answer
   x = 3,694.64