Finding the Fourth Proportional to 10,173.95, 15,258.12 and 2,778.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,173.95 : 15,258.12 = 2,778.71 : x
2. Step 2: Convert to fraction form
   10,173.95/15,258.12 = 2,778.71/x
3. Step 3: Cross multiply
   10,173.95x = 15,258.12 × 2,778.71
4. Step 4: Simplify right side
   10,173.95x = 42,397,819.54
5. Step 5: Solve for x
   x = 42,397,819.54/10,173.95
6. Step 6: Final answer
   x = 4,167.29