Finding the Fourth Proportional to 12,653.99, 18,981.89 and 3,647.73

Step by Step Solution

1. Step 1: Write the proportion equation
   12,653.99 : 18,981.89 = 3,647.73 : x
2. Step 2: Convert to fraction form
   12,653.99/18,981.89 = 3,647.73/x
3. Step 3: Cross multiply
   12,653.99x = 18,981.89 × 3,647.73
4. Step 4: Simplify right side
   12,653.99x = 69,240,896.75
5. Step 5: Solve for x
   x = 69,240,896.75/12,653.99
6. Step 6: Final answer
   x = 5,471.86