Finding the Fourth Proportional to 10,173.77, 15,259.10 and 2,778.83

Step by Step Solution

1. Step 1: Write the proportion equation
   10,173.77 : 15,259.10 = 2,778.83 : x
2. Step 2: Convert to fraction form
   10,173.77/15,259.10 = 2,778.83/x
3. Step 3: Cross multiply
   10,173.77x = 15,259.10 × 2,778.83
4. Step 4: Simplify right side
   10,173.77x = 42,402,354.66
5. Step 5: Solve for x
   x = 42,402,354.66/10,173.77
6. Step 6: Final answer
   x = 4,167.81