Finding the Fourth Proportional to 13,454.54, 20,180.99 and 5,019.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,454.54 : 20,180.99 = 5,019.42 : x
2. Step 2: Convert to fraction form
   13,454.54/20,180.99 = 5,019.42/x
3. Step 3: Cross multiply
   13,454.54x = 20,180.99 × 5,019.42
4. Step 4: Simplify right side
   13,454.54x = 101,296,864.83
5. Step 5: Solve for x
   x = 101,296,864.83/13,454.54
6. Step 6: Final answer
   x = 7,528.82