Finding the Fourth Proportional to 9,128.28, 13,693.18 and 2,554.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,128.28 : 13,693.18 = 2,554.46 : x
2. Step 2: Convert to fraction form
   9,128.28/13,693.18 = 2,554.46/x
3. Step 3: Cross multiply
   9,128.28x = 13,693.18 × 2,554.46
4. Step 4: Simplify right side
   9,128.28x = 34,978,605.73
5. Step 5: Solve for x
   x = 34,978,605.73/9,128.28
6. Step 6: Final answer
   x = 3,831.89