Finding the Fourth Proportional to 9,054.38, 12,495.08 and 5,280.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,054.38 : 12,495.08 = 5,280.16 : x
2. Step 2: Convert to fraction form
   9,054.38/12,495.08 = 5,280.16/x
3. Step 3: Cross multiply
   9,054.38x = 12,495.08 × 5,280.16
4. Step 4: Simplify right side
   9,054.38x = 65,976,003.58
5. Step 5: Solve for x
   x = 65,976,003.58/9,054.38
6. Step 6: Final answer
   x = 7,286.64