Finding the Fourth Proportional to 19,088.29, 28,608.89 and 13,841.31

Step by Step Solution

1. Step 1: Write the proportion equation
   19,088.29 : 28,608.89 = 13,841.31 : x
2. Step 2: Convert to fraction form
   19,088.29/28,608.89 = 13,841.31/x
3. Step 3: Cross multiply
   19,088.29x = 28,608.89 × 13,841.31
4. Step 4: Simplify right side
   19,088.29x = 395,984,515.25
5. Step 5: Solve for x
   x = 395,984,515.25/19,088.29
6. Step 6: Final answer
   x = 20,744.90