Finding the Fourth Proportional to 12,276.18, 18,411.84 and 5,705.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,276.18 : 18,411.84 = 5,705.46 : x
2. Step 2: Convert to fraction form
   12,276.18/18,411.84 = 5,705.46/x
3. Step 3: Cross multiply
   12,276.18x = 18,411.84 × 5,705.46
4. Step 4: Simplify right side
   12,276.18x = 105,048,016.65
5. Step 5: Solve for x
   x = 105,048,016.65/12,276.18
6. Step 6: Final answer
   x = 8,557.06