Finding the Fourth Proportional to 8,212.10, 11,333.76 and 5,692.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,212.10 : 11,333.76 = 5,692.89 : x
2. Step 2: Convert to fraction form
   8,212.10/11,333.76 = 5,692.89/x
3. Step 3: Cross multiply
   8,212.10x = 11,333.76 × 5,692.89
4. Step 4: Simplify right side
   8,212.10x = 64,521,870.12
5. Step 5: Solve for x
   x = 64,521,870.12/8,212.10
6. Step 6: Final answer
   x = 7,856.93