Finding the Fourth Proportional to 9,922.84, 13,692.72 and 5,731.36

Step by Step Solution

1. Step 1: Write the proportion equation
   9,922.84 : 13,692.72 = 5,731.36 : x
2. Step 2: Convert to fraction form
   9,922.84/13,692.72 = 5,731.36/x
3. Step 3: Cross multiply
   9,922.84x = 13,692.72 × 5,731.36
4. Step 4: Simplify right side
   9,922.84x = 78,477,907.70
5. Step 5: Solve for x
   x = 78,477,907.70/9,922.84
6. Step 6: Final answer
   x = 7,908.82