Finding the Fourth Proportional to 3,768.12, 5,200.34 and 2,196.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,768.12 : 5,200.34 = 2,196.72 : x
2. Step 2: Convert to fraction form
   3,768.12/5,200.34 = 2,196.72/x
3. Step 3: Cross multiply
   3,768.12x = 5,200.34 × 2,196.72
4. Step 4: Simplify right side
   3,768.12x = 11,423,679.90
5. Step 5: Solve for x
   x = 11,423,679.90/3,768.12
6. Step 6: Final answer
   x = 3,031.67