Finding the Fourth Proportional to 4,859.89, 6,707.71 and 3,091.15

Step by Step Solution

1. Step 1: Write the proportion equation
   4,859.89 : 6,707.71 = 3,091.15 : x
2. Step 2: Convert to fraction form
   4,859.89/6,707.71 = 3,091.15/x
3. Step 3: Cross multiply
   4,859.89x = 6,707.71 × 3,091.15
4. Step 4: Simplify right side
   4,859.89x = 20,734,537.77
5. Step 5: Solve for x
   x = 20,734,537.77/4,859.89
6. Step 6: Final answer
   x = 4,266.46