Finding the Fourth Proportional to 3,693.42, 5,096.88 and 2,121.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,693.42 : 5,096.88 = 2,121.76 : x
2. Step 2: Convert to fraction form
   3,693.42/5,096.88 = 2,121.76/x
3. Step 3: Cross multiply
   3,693.42x = 5,096.88 × 2,121.76
4. Step 4: Simplify right side
   3,693.42x = 10,814,356.11
5. Step 5: Solve for x
   x = 10,814,356.11/3,693.42
6. Step 6: Final answer
   x = 2,928.01