Finding the Fourth Proportional to 3,768.98, 5,200.12 and 2,196.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,768.98 : 5,200.12 = 2,196.78 : x
2. Step 2: Convert to fraction form
   3,768.98/5,200.12 = 2,196.78/x
3. Step 3: Cross multiply
   3,768.98x = 5,200.12 × 2,196.78
4. Step 4: Simplify right side
   3,768.98x = 11,423,519.61
5. Step 5: Solve for x
   x = 11,423,519.61/3,768.98
6. Step 6: Final answer
   x = 3,030.93