Finding the Fourth Proportional to 28,443.62, 42,662.55 and 7,669.22

Step by Step Solution

1. Step 1: Write the proportion equation
   28,443.62 : 42,662.55 = 7,669.22 : x
2. Step 2: Convert to fraction form
   28,443.62/42,662.55 = 7,669.22/x
3. Step 3: Cross multiply
   28,443.62x = 42,662.55 × 7,669.22
4. Step 4: Simplify right side
   28,443.62x = 327,188,481.71
5. Step 5: Solve for x
   x = 327,188,481.71/28,443.62
6. Step 6: Final answer
   x = 11,503.05