Finding the Fourth Proportional to 9,178.88, 12,662.40 and 5,450.24

Step by Step Solution

1. Step 1: Write the proportion equation
   9,178.88 : 12,662.40 = 5,450.24 : x
2. Step 2: Convert to fraction form
   9,178.88/12,662.40 = 5,450.24/x
3. Step 3: Cross multiply
   9,178.88x = 12,662.40 × 5,450.24
4. Step 4: Simplify right side
   9,178.88x = 69,013,118.98
5. Step 5: Solve for x
   x = 69,013,118.98/9,178.88
6. Step 6: Final answer
   x = 7,518.69