Finding the Fourth Proportional to 19,019.09, 28,556.33 and 13,501.73

Step by Step Solution

1. Step 1: Write the proportion equation
   19,019.09 : 28,556.33 = 13,501.73 : x
2. Step 2: Convert to fraction form
   19,019.09/28,556.33 = 13,501.73/x
3. Step 3: Cross multiply
   19,019.09x = 28,556.33 × 13,501.73
4. Step 4: Simplify right side
   19,019.09x = 385,559,861.33
5. Step 5: Solve for x
   x = 385,559,861.33/19,019.09
6. Step 6: Final answer
   x = 20,272.25