Finding the Fourth Proportional to 3,768.64, 5,200.16 and 2,112.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,768.64 : 5,200.16 = 2,112.32 : x
2. Step 2: Convert to fraction form
   3,768.64/5,200.16 = 2,112.32/x
3. Step 3: Cross multiply
   3,768.64x = 5,200.16 × 2,112.32
4. Step 4: Simplify right side
   3,768.64x = 10,984,401.97
5. Step 5: Solve for x
   x = 10,984,401.97/3,768.64
6. Step 6: Final answer
   x = 2,914.69