Finding the Fourth Proportional to 31,574.54, 43,569.16 and 18,828.42

Step by Step Solution

1. Step 1: Write the proportion equation
   31,574.54 : 43,569.16 = 18,828.42 : x
2. Step 2: Convert to fraction form
   31,574.54/43,569.16 = 18,828.42/x
3. Step 3: Cross multiply
   31,574.54x = 43,569.16 × 18,828.42
4. Step 4: Simplify right side
   31,574.54x = 820,338,443.53
5. Step 5: Solve for x
   x = 820,338,443.53/31,574.54
6. Step 6: Final answer
   x = 25,981.01