Finding the Fourth Proportional to 17,885.30, 26,831.79 and 5,404.34

Step by Step Solution

1. Step 1: Write the proportion equation
   17,885.30 : 26,831.79 = 5,404.34 : x
2. Step 2: Convert to fraction form
   17,885.30/26,831.79 = 5,404.34/x
3. Step 3: Cross multiply
   17,885.30x = 26,831.79 × 5,404.34
4. Step 4: Simplify right side
   17,885.30x = 145,008,115.97
5. Step 5: Solve for x
   x = 145,008,115.97/17,885.30
6. Step 6: Final answer
   x = 8,107.67