Finding the Fourth Proportional to 19,086.48, 28,632.96 and 7,241.31

Step by Step Solution

1. Step 1: Write the proportion equation
   19,086.48 : 28,632.96 = 7,241.31 : x
2. Step 2: Convert to fraction form
   19,086.48/28,632.96 = 7,241.31/x
3. Step 3: Cross multiply
   19,086.48x = 28,632.96 × 7,241.31
4. Step 4: Simplify right side
   19,086.48x = 207,340,139.58
5. Step 5: Solve for x
   x = 207,340,139.58/19,086.48
6. Step 6: Final answer
   x = 10,863.19