Finding the Fourth Proportional to 3,911.94, 5,368.86 and 3,802.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,911.94 : 5,368.86 = 3,802.59 : x
2. Step 2: Convert to fraction form
   3,911.94/5,368.86 = 3,802.59/x
3. Step 3: Cross multiply
   3,911.94x = 5,368.86 × 3,802.59
4. Step 4: Simplify right side
   3,911.94x = 20,415,573.35
5. Step 5: Solve for x
   x = 20,415,573.35/3,911.94
6. Step 6: Final answer
   x = 5,218.78