Finding the Fourth Proportional to 13,200.42, 19,798.46 and 3,964.26

Step by Step Solution

1. Step 1: Write the proportion equation
   13,200.42 : 19,798.46 = 3,964.26 : x
2. Step 2: Convert to fraction form
   13,200.42/19,798.46 = 3,964.26/x
3. Step 3: Cross multiply
   13,200.42x = 19,798.46 × 3,964.26
4. Step 4: Simplify right side
   13,200.42x = 78,486,243.04
5. Step 5: Solve for x
   x = 78,486,243.04/13,200.42
6. Step 6: Final answer
   x = 5,945.74