Finding the Fourth Proportional to 3,644.72, 5,030.16 and 2,072.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,644.72 : 5,030.16 = 2,072.96 : x
2. Step 2: Convert to fraction form
   3,644.72/5,030.16 = 2,072.96/x
3. Step 3: Cross multiply
   3,644.72x = 5,030.16 × 2,072.96
4. Step 4: Simplify right side
   3,644.72x = 10,427,320.47
5. Step 5: Solve for x
   x = 10,427,320.47/3,644.72
6. Step 6: Final answer
   x = 2,860.94