Finding the Fourth Proportional to 3,911.88, 5,859.22 and 3,696.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,911.88 : 5,859.22 = 3,696.22 : x
2. Step 2: Convert to fraction form
   3,911.88/5,859.22 = 3,696.22/x
3. Step 3: Cross multiply
   3,911.88x = 5,859.22 × 3,696.22
4. Step 4: Simplify right side
   3,911.88x = 21,656,966.15
5. Step 5: Solve for x
   x = 21,656,966.15/3,911.88
6. Step 6: Final answer
   x = 5,536.20