Finding the Fourth Proportional to 6,894.20, 9,513.86 and 3,910.05

Step by Step Solution

1. Step 1: Write the proportion equation
   6,894.20 : 9,513.86 = 3,910.05 : x
2. Step 2: Convert to fraction form
   6,894.20/9,513.86 = 3,910.05/x
3. Step 3: Cross multiply
   6,894.20x = 9,513.86 × 3,910.05
4. Step 4: Simplify right side
   6,894.20x = 37,199,648.74
5. Step 5: Solve for x
   x = 37,199,648.74/6,894.20
6. Step 6: Final answer
   x = 5,395.79