Finding the Fourth Proportional to 10,185.96, 15,278.96 and 2,790.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,185.96 : 15,278.96 = 2,790.48 : x
2. Step 2: Convert to fraction form
   10,185.96/15,278.96 = 2,790.48/x
3. Step 3: Cross multiply
   10,185.96x = 15,278.96 × 2,790.48
4. Step 4: Simplify right side
   10,185.96x = 42,635,632.30
5. Step 5: Solve for x
   x = 42,635,632.30/10,185.96
6. Step 6: Final answer
   x = 4,185.73