Finding the Fourth Proportional to 11,055.60, 15,261.72 and 7,082.16

Step by Step Solution

1. Step 1: Write the proportion equation
   11,055.60 : 15,261.72 = 7,082.16 : x
2. Step 2: Convert to fraction form
   11,055.60/15,261.72 = 7,082.16/x
3. Step 3: Cross multiply
   11,055.60x = 15,261.72 × 7,082.16
4. Step 4: Simplify right side
   11,055.60x = 108,085,942.92
5. Step 5: Solve for x
   x = 108,085,942.92/11,055.60
6. Step 6: Final answer
   x = 9,776.58