Finding the Fourth Proportional to 8,449.89, 12,686.33 and 4,754.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,449.89 : 12,686.33 = 4,754.72 : x
2. Step 2: Convert to fraction form
   8,449.89/12,686.33 = 4,754.72/x
3. Step 3: Cross multiply
   8,449.89x = 12,686.33 × 4,754.72
4. Step 4: Simplify right side
   8,449.89x = 60,319,859.77
5. Step 5: Solve for x
   x = 60,319,859.77/8,449.89
6. Step 6: Final answer
   x = 7,138.54