Finding the Fourth Proportional to 3,765.63, 5,196.56 and 2,109.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,765.63 : 5,196.56 = 2,109.63 : x
2. Step 2: Convert to fraction form
   3,765.63/5,196.56 = 2,109.63/x
3. Step 3: Cross multiply
   3,765.63x = 5,196.56 × 2,109.63
4. Step 4: Simplify right side
   3,765.63x = 10,962,798.16
5. Step 5: Solve for x
   x = 10,962,798.16/3,765.63
6. Step 6: Final answer
   x = 2,911.28