Finding the Fourth Proportional to 10,173.89, 15,260.22 and 2,778.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,173.89 : 15,260.22 = 2,778.59 : x
2. Step 2: Convert to fraction form
   10,173.89/15,260.22 = 2,778.59/x
3. Step 3: Cross multiply
   10,173.89x = 15,260.22 × 2,778.59
4. Step 4: Simplify right side
   10,173.89x = 42,401,818.39
5. Step 5: Solve for x
   x = 42,401,818.39/10,173.89
6. Step 6: Final answer
   x = 4,167.71