Finding the Fourth Proportional to 11,066.24, 16,603.68 and 5,223.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,066.24 : 16,603.68 = 5,223.20 : x
2. Step 2: Convert to fraction form
   11,066.24/16,603.68 = 5,223.20/x
3. Step 3: Cross multiply
   11,066.24x = 16,603.68 × 5,223.20
4. Step 4: Simplify right side
   11,066.24x = 86,724,341.38
5. Step 5: Solve for x
   x = 86,724,341.38/11,066.24
6. Step 6: Final answer
   x = 7,836.84