Finding the Fourth Proportional to 12,574.52, 18,864.69 and 3,689.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,574.52 : 18,864.69 = 3,689.49 : x
2. Step 2: Convert to fraction form
   12,574.52/18,864.69 = 3,689.49/x
3. Step 3: Cross multiply
   12,574.52x = 18,864.69 × 3,689.49
4. Step 4: Simplify right side
   12,574.52x = 69,601,037.95
5. Step 5: Solve for x
   x = 69,601,037.95/12,574.52
6. Step 6: Final answer
   x = 5,535.09