Finding the Fourth Proportional to 3,693.75, 5,097.33 and 2,121.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,693.75 : 5,097.33 = 2,121.72 : x
2. Step 2: Convert to fraction form
   3,693.75/5,097.33 = 2,121.72/x
3. Step 3: Cross multiply
   3,693.75x = 5,097.33 × 2,121.72
4. Step 4: Simplify right side
   3,693.75x = 10,815,107.01
5. Step 5: Solve for x
   x = 10,815,107.01/3,693.75
6. Step 6: Final answer
   x = 2,927.95