Finding the Fourth Proportional to 19,086.96, 28,638.96 and 7,401.09

Step by Step Solution

1. Step 1: Write the proportion equation
   19,086.96 : 28,638.96 = 7,401.09 : x
2. Step 2: Convert to fraction form
   19,086.96/28,638.96 = 7,401.09/x
3. Step 3: Cross multiply
   19,086.96x = 28,638.96 × 7,401.09
4. Step 4: Simplify right side
   19,086.96x = 211,959,520.47
5. Step 5: Solve for x
   x = 211,959,520.47/19,086.96
6. Step 6: Final answer
   x = 11,104.94