Finding the Fourth Proportional to 10,148.78, 15,229.98 and 3,574.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,148.78 : 15,229.98 = 3,574.94 : x
2. Step 2: Convert to fraction form
   10,148.78/15,229.98 = 3,574.94/x
3. Step 3: Cross multiply
   10,148.78x = 15,229.98 × 3,574.94
4. Step 4: Simplify right side
   10,148.78x = 54,446,264.70
5. Step 5: Solve for x
   x = 54,446,264.70/10,148.78
6. Step 6: Final answer
   x = 5,364.81