Finding the Fourth Proportional to 8,705.46, 13,058.17 and 3,158.79

Step by Step Solution

1. Step 1: Write the proportion equation
   8,705.46 : 13,058.17 = 3,158.79 : x
2. Step 2: Convert to fraction form
   8,705.46/13,058.17 = 3,158.79/x
3. Step 3: Cross multiply
   8,705.46x = 13,058.17 × 3,158.79
4. Step 4: Simplify right side
   8,705.46x = 41,248,001.02
5. Step 5: Solve for x
   x = 41,248,001.02/8,705.46
6. Step 6: Final answer
   x = 4,738.18