Finding the Fourth Proportional to 4,013.72, 5,538.78 and 2,245.28

Step by Step Solution

1. Step 1: Write the proportion equation
   4,013.72 : 5,538.78 = 2,245.28 : x
2. Step 2: Convert to fraction form
   4,013.72/5,538.78 = 2,245.28/x
3. Step 3: Cross multiply
   4,013.72x = 5,538.78 × 2,245.28
4. Step 4: Simplify right side
   4,013.72x = 12,436,111.96
5. Step 5: Solve for x
   x = 12,436,111.96/4,013.72
6. Step 6: Final answer
   x = 3,098.40