Finding the Fourth Proportional to 9,128.32, 13,693.16 and 2,554.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,128.32 : 13,693.16 = 2,554.42 : x
2. Step 2: Convert to fraction form
   9,128.32/13,693.16 = 2,554.42/x
3. Step 3: Cross multiply
   9,128.32x = 13,693.16 × 2,554.42
4. Step 4: Simplify right side
   9,128.32x = 34,978,081.77
5. Step 5: Solve for x
   x = 34,978,081.77/9,128.32
6. Step 6: Final answer
   x = 3,831.82