Finding the Fourth Proportional to 3,564.72, 5,349.10 and 1,921.23

Step by Step Solution

1. Step 1: Write the proportion equation
   3,564.72 : 5,349.10 = 1,921.23 : x
2. Step 2: Convert to fraction form
   3,564.72/5,349.10 = 1,921.23/x
3. Step 3: Cross multiply
   3,564.72x = 5,349.10 × 1,921.23
4. Step 4: Simplify right side
   3,564.72x = 10,276,851.39
5. Step 5: Solve for x
   x = 10,276,851.39/3,564.72
6. Step 6: Final answer
   x = 2,882.93