Finding the Fourth Proportional to 13,253.78, 19,889.76 and 5,462.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,253.78 : 19,889.76 = 5,462.54 : x
2. Step 2: Convert to fraction form
   13,253.78/19,889.76 = 5,462.54/x
3. Step 3: Cross multiply
   13,253.78x = 19,889.76 × 5,462.54
4. Step 4: Simplify right side
   13,253.78x = 108,648,609.59
5. Step 5: Solve for x
   x = 108,648,609.59/13,253.78
6. Step 6: Final answer
   x = 8,197.56