Finding the Fourth Proportional to 14,705.06, 20,293.89 and 8,417.30

Step by Step Solution

1. Step 1: Write the proportion equation
   14,705.06 : 20,293.89 = 8,417.30 : x
2. Step 2: Convert to fraction form
   14,705.06/20,293.89 = 8,417.30/x
3. Step 3: Cross multiply
   14,705.06x = 20,293.89 × 8,417.30
4. Step 4: Simplify right side
   14,705.06x = 170,819,760.30
5. Step 5: Solve for x
   x = 170,819,760.30/14,705.06
6. Step 6: Final answer
   x = 11,616.39