Finding the Fourth Proportional to 9,131.06, 13,686.22 and 3,862.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.06 : 13,686.22 = 3,862.79 : x
2. Step 2: Convert to fraction form
   9,131.06/13,686.22 = 3,862.79/x
3. Step 3: Cross multiply
   9,131.06x = 13,686.22 × 3,862.79
4. Step 4: Simplify right side
   9,131.06x = 52,866,930.88
5. Step 5: Solve for x
   x = 52,866,930.88/9,131.06
6. Step 6: Final answer
   x = 5,789.79