Finding the Fourth Proportional to 3,911.86, 5,394.04 and 2,493.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,911.86 : 5,394.04 = 2,493.30 : x
2. Step 2: Convert to fraction form
   3,911.86/5,394.04 = 2,493.30/x
3. Step 3: Cross multiply
   3,911.86x = 5,394.04 × 2,493.30
4. Step 4: Simplify right side
   3,911.86x = 13,448,947.47
5. Step 5: Solve for x
   x = 13,448,947.47/3,911.86
6. Step 6: Final answer
   x = 3,437.99