Finding the Fourth Proportional to 11,072.79, 16,612.83 and 5,228.64

Step by Step Solution

1. Step 1: Write the proportion equation
   11,072.79 : 16,612.83 = 5,228.64 : x
2. Step 2: Convert to fraction form
   11,072.79/16,612.83 = 5,228.64/x
3. Step 3: Cross multiply
   11,072.79x = 16,612.83 × 5,228.64
4. Step 4: Simplify right side
   11,072.79x = 86,862,507.45
5. Step 5: Solve for x
   x = 86,862,507.45/11,072.79
6. Step 6: Final answer
   x = 7,844.68