Finding the Fourth Proportional to 16,440, 24,636.24 and 7,077.48

Step by Step Solution

1. Step 1: Write the proportion equation
   16,440 : 24,636.24 = 7,077.48 : x
2. Step 2: Convert to fraction form
   16,440/24,636.24 = 7,077.48/x
3. Step 3: Cross multiply
   16,440x = 24,636.24 × 7,077.48
4. Step 4: Simplify right side
   16,440x = 174,362,495.88
5. Step 5: Solve for x
   x = 174,362,495.88/16,440
6. Step 6: Final answer
   x = 10,605.99