Finding the Fourth Proportional to 13,255.78, 19,892.76 and 5,464.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,255.78 : 19,892.76 = 5,464.54 : x
2. Step 2: Convert to fraction form
   13,255.78/19,892.76 = 5,464.54/x
3. Step 3: Cross multiply
   13,255.78x = 19,892.76 × 5,464.54
4. Step 4: Simplify right side
   13,255.78x = 108,704,782.73
5. Step 5: Solve for x
   x = 108,704,782.73/13,255.78
6. Step 6: Final answer
   x = 8,200.56