Finding the Fourth Proportional to 13,196.36, 19,777.61 and 5,395.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,196.36 : 19,777.61 = 5,395.88 : x
2. Step 2: Convert to fraction form
   13,196.36/19,777.61 = 5,395.88/x
3. Step 3: Cross multiply
   13,196.36x = 19,777.61 × 5,395.88
4. Step 4: Simplify right side
   13,196.36x = 106,717,673.18
5. Step 5: Solve for x
   x = 106,717,673.18/13,196.36
6. Step 6: Final answer
   x = 8,086.90