Finding the Fourth Proportional to 11,900.62, 17,849.49 and 3,136.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,900.62 : 17,849.49 = 3,136.20 : x
2. Step 2: Convert to fraction form
   11,900.62/17,849.49 = 3,136.20/x
3. Step 3: Cross multiply
   11,900.62x = 17,849.49 × 3,136.20
4. Step 4: Simplify right side
   11,900.62x = 55,979,570.54
5. Step 5: Solve for x
   x = 55,979,570.54/11,900.62
6. Step 6: Final answer
   x = 4,703.92