Finding the Fourth Proportional to 9,280.16, 12,804.66 and 5,556.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,280.16 : 12,804.66 = 5,556.32 : x
2. Step 2: Convert to fraction form
   9,280.16/12,804.66 = 5,556.32/x
3. Step 3: Cross multiply
   9,280.16x = 12,804.66 × 5,556.32
4. Step 4: Simplify right side
   9,280.16x = 71,146,788.45
5. Step 5: Solve for x
   x = 71,146,788.45/9,280.16
6. Step 6: Final answer
   x = 7,666.55