Finding the Fourth Proportional to 10,136.78, 15,203.52 and 3,561.43

Step by Step Solution

1. Step 1: Write the proportion equation
   10,136.78 : 15,203.52 = 3,561.43 : x
2. Step 2: Convert to fraction form
   10,136.78/15,203.52 = 3,561.43/x
3. Step 3: Cross multiply
   10,136.78x = 15,203.52 × 3,561.43
4. Step 4: Simplify right side
   10,136.78x = 54,146,216.42
5. Step 5: Solve for x
   x = 54,146,216.42/10,136.78
6. Step 6: Final answer
   x = 5,341.56