Finding the Fourth Proportional to 10,109.62, 15,136.44 and 5,168.62

Step by Step Solution

1. Step 1: Write the proportion equation
   10,109.62 : 15,136.44 = 5,168.62 : x
2. Step 2: Convert to fraction form
   10,109.62/15,136.44 = 5,168.62/x
3. Step 3: Cross multiply
   10,109.62x = 15,136.44 × 5,168.62
4. Step 4: Simplify right side
   10,109.62x = 78,234,506.51
5. Step 5: Solve for x
   x = 78,234,506.51/10,109.62
6. Step 6: Final answer
   x = 7,738.62