Finding the Fourth Proportional to 13,086.54, 19,630.26 and 5,190.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,086.54 : 19,630.26 = 5,190.56 : x
2. Step 2: Convert to fraction form
   13,086.54/19,630.26 = 5,190.56/x
3. Step 3: Cross multiply
   13,086.54x = 19,630.26 × 5,190.56
4. Step 4: Simplify right side
   13,086.54x = 101,892,042.35
5. Step 5: Solve for x
   x = 101,892,042.35/13,086.54
6. Step 6: Final answer
   x = 7,786.02