Finding the Fourth Proportional to 9,150.78, 13,726.20 and 2,225.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,150.78 : 13,726.20 = 2,225.28 : x
2. Step 2: Convert to fraction form
   9,150.78/13,726.20 = 2,225.28/x
3. Step 3: Cross multiply
   9,150.78x = 13,726.20 × 2,225.28
4. Step 4: Simplify right side
   9,150.78x = 30,544,638.34
5. Step 5: Solve for x
   x = 30,544,638.34/9,150.78
6. Step 6: Final answer
   x = 3,337.93