Finding the Fourth Proportional to 22,296.90, 30,768.72 and 13,339.02

Step by Step Solution

1. Step 1: Write the proportion equation
   22,296.90 : 30,768.72 = 13,339.02 : x
2. Step 2: Convert to fraction form
   22,296.90/30,768.72 = 13,339.02/x
3. Step 3: Cross multiply
   22,296.90x = 30,768.72 × 13,339.02
4. Step 4: Simplify right side
   22,296.90x = 410,424,571.45
5. Step 5: Solve for x
   x = 410,424,571.45/22,296.90
6. Step 6: Final answer
   x = 18,407.25