Finding the Fourth Proportional to 22,788.93, 31,458.31 and 13,839.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,788.93 : 31,458.31 = 13,839.31 : x
2. Step 2: Convert to fraction form
   22,788.93/31,458.31 = 13,839.31/x
3. Step 3: Cross multiply
   22,788.93x = 31,458.31 × 13,839.31
4. Step 4: Simplify right side
   22,788.93x = 435,361,304.17
5. Step 5: Solve for x
   x = 435,361,304.17/22,788.93
6. Step 6: Final answer
   x = 19,104.07