Finding the Fourth Proportional to 10,173.05, 15,257.98 and 2,778.11

Step by Step Solution

1. Step 1: Write the proportion equation
   10,173.05 : 15,257.98 = 2,778.11 : x
2. Step 2: Convert to fraction form
   10,173.05/15,257.98 = 2,778.11/x
3. Step 3: Cross multiply
   10,173.05x = 15,257.98 × 2,778.11
4. Step 4: Simplify right side
   10,173.05x = 42,388,346.82
5. Step 5: Solve for x
   x = 42,388,346.82/10,173.05
6. Step 6: Final answer
   x = 4,166.73