Finding the Fourth Proportional to 10,149.78, 15,231.48 and 3,575.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,149.78 : 15,231.48 = 3,575.94 : x
2. Step 2: Convert to fraction form
   10,149.78/15,231.48 = 3,575.94/x
3. Step 3: Cross multiply
   10,149.78x = 15,231.48 × 3,575.94
4. Step 4: Simplify right side
   10,149.78x = 54,466,858.59
5. Step 5: Solve for x
   x = 54,466,858.59/10,149.78
6. Step 6: Final answer
   x = 5,366.31