Finding the Fourth Proportional to 10,198.74, 15,298.49 and 2,803.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,198.74 : 15,298.49 = 2,803.78 : x
2. Step 2: Convert to fraction form
   10,198.74/15,298.49 = 2,803.78/x
3. Step 3: Cross multiply
   10,198.74x = 15,298.49 × 2,803.78
4. Step 4: Simplify right side
   10,198.74x = 42,893,626.42
5. Step 5: Solve for x
   x = 42,893,626.42/10,198.74
6. Step 6: Final answer
   x = 4,205.78