Finding the Fourth Proportional to 12,136.43, 18,211.73 and 5,116.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,136.43 : 18,211.73 = 5,116.02 : x
2. Step 2: Convert to fraction form
   12,136.43/18,211.73 = 5,116.02/x
3. Step 3: Cross multiply
   12,136.43x = 18,211.73 × 5,116.02
4. Step 4: Simplify right side
   12,136.43x = 93,171,481.04
5. Step 5: Solve for x
   x = 93,171,481.04/12,136.43
6. Step 6: Final answer
   x = 7,677.01