Finding the Fourth Proportional to 9,054.92, 12,495.78 and 5,518.14

Step by Step Solution

1. Step 1: Write the proportion equation
   9,054.92 : 12,495.78 = 5,518.14 : x
2. Step 2: Convert to fraction form
   9,054.92/12,495.78 = 5,518.14/x
3. Step 3: Cross multiply
   9,054.92x = 12,495.78 × 5,518.14
4. Step 4: Simplify right side
   9,054.92x = 68,953,463.45
5. Step 5: Solve for x
   x = 68,953,463.45/9,054.92
6. Step 6: Final answer
   x = 7,615.03