Finding the Fourth Proportional to 16,440.48, 24,667.20 and 7,200

Step by Step Solution

1. Step 1: Write the proportion equation
   16,440.48 : 24,667.20 = 7,200 : x
2. Step 2: Convert to fraction form
   16,440.48/24,667.20 = 7,200/x
3. Step 3: Cross multiply
   16,440.48x = 24,667.20 × 7,200
4. Step 4: Simplify right side
   16,440.48x = 177,603,840
5. Step 5: Solve for x
   x = 177,603,840/16,440.48
6. Step 6: Final answer
   x = 10,802.84