Finding the Fourth Proportional to 10,136.29, 15,205.89 and 3,116.89

Step by Step Solution

1. Step 1: Write the proportion equation
   10,136.29 : 15,205.89 = 3,116.89 : x
2. Step 2: Convert to fraction form
   10,136.29/15,205.89 = 3,116.89/x
3. Step 3: Cross multiply
   10,136.29x = 15,205.89 × 3,116.89
4. Step 4: Simplify right side
   10,136.29x = 47,395,143.50
5. Step 5: Solve for x
   x = 47,395,143.50/10,136.29
6. Step 6: Final answer
   x = 4,675.79