Finding the Fourth Proportional to 9,495.87, 14,158.31 and 8,705.49

Step by Step Solution

1. Step 1: Write the proportion equation
   9,495.87 : 14,158.31 = 8,705.49 : x
2. Step 2: Convert to fraction form
   9,495.87/14,158.31 = 8,705.49/x
3. Step 3: Cross multiply
   9,495.87x = 14,158.31 × 8,705.49
4. Step 4: Simplify right side
   9,495.87x = 123,254,982.59
5. Step 5: Solve for x
   x = 123,254,982.59/9,495.87
6. Step 6: Final answer
   x = 12,979.85