Finding the Fourth Proportional to 9,672.22, 13,348.79 and 5,424.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,672.22 : 13,348.79 = 5,424.45 : x
2. Step 2: Convert to fraction form
   9,672.22/13,348.79 = 5,424.45/x
3. Step 3: Cross multiply
   9,672.22x = 13,348.79 × 5,424.45
4. Step 4: Simplify right side
   9,672.22x = 72,409,843.92
5. Step 5: Solve for x
   x = 72,409,843.92/9,672.22
6. Step 6: Final answer
   x = 7,486.37