Finding the Fourth Proportional to 12,288.06, 18,436.08 and 5,714.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,288.06 : 18,436.08 = 5,714.10 : x
2. Step 2: Convert to fraction form
   12,288.06/18,436.08 = 5,714.10/x
3. Step 3: Cross multiply
   12,288.06x = 18,436.08 × 5,714.10
4. Step 4: Simplify right side
   12,288.06x = 105,345,604.73
5. Step 5: Solve for x
   x = 105,345,604.73/12,288.06
6. Step 6: Final answer
   x = 8,573.01