Finding the Fourth Proportional to 21,069.05, 31,603.56 and 5,486.67

Step by Step Solution

1. Step 1: Write the proportion equation
   21,069.05 : 31,603.56 = 5,486.67 : x
2. Step 2: Convert to fraction form
   21,069.05/31,603.56 = 5,486.67/x
3. Step 3: Cross multiply
   21,069.05x = 31,603.56 × 5,486.67
4. Step 4: Simplify right side
   21,069.05x = 173,398,304.55
5. Step 5: Solve for x
   x = 173,398,304.55/21,069.05
6. Step 6: Final answer
   x = 8,230.00