Finding the Fourth Proportional to 10,114.50, 15,174.31 and 2,818.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,114.50 : 15,174.31 = 2,818.50 : x
2. Step 2: Convert to fraction form
   10,114.50/15,174.31 = 2,818.50/x
3. Step 3: Cross multiply
   10,114.50x = 15,174.31 × 2,818.50
4. Step 4: Simplify right side
   10,114.50x = 42,768,792.74
5. Step 5: Solve for x
   x = 42,768,792.74/10,114.50
6. Step 6: Final answer
   x = 4,228.46