Finding the Fourth Proportional to 12,036.72, 18,057 and 3,714.99

Step by Step Solution

1. Step 1: Write the proportion equation
   12,036.72 : 18,057 = 3,714.99 : x
2. Step 2: Convert to fraction form
   12,036.72/18,057 = 3,714.99/x
3. Step 3: Cross multiply
   12,036.72x = 18,057 × 3,714.99
4. Step 4: Simplify right side
   12,036.72x = 67,081,574.43
5. Step 5: Solve for x
   x = 67,081,574.43/12,036.72
6. Step 6: Final answer
   x = 5,573.08