Finding the Fourth Proportional to 9,052.36, 12,485.04 and 7,280.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,052.36 : 12,485.04 = 7,280.89 : x
2. Step 2: Convert to fraction form
   9,052.36/12,485.04 = 7,280.89/x
3. Step 3: Cross multiply
   9,052.36x = 12,485.04 × 7,280.89
4. Step 4: Simplify right side
   9,052.36x = 90,902,144.37
5. Step 5: Solve for x
   x = 90,902,144.37/9,052.36
6. Step 6: Final answer
   x = 10,041.82