Finding the Fourth Proportional to 19,109.54, 28,675.59 and 7,273.28

Step by Step Solution

1. Step 1: Write the proportion equation
   19,109.54 : 28,675.59 = 7,273.28 : x
2. Step 2: Convert to fraction form
   19,109.54/28,675.59 = 7,273.28/x
3. Step 3: Cross multiply
   19,109.54x = 28,675.59 × 7,273.28
4. Step 4: Simplify right side
   19,109.54x = 208,565,478.35
5. Step 5: Solve for x
   x = 208,565,478.35/19,109.54
6. Step 6: Final answer
   x = 10,914.21