Finding the Fourth Proportional to 9,921.84, 13,692.72 and 5,943.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,921.84 : 13,692.72 = 5,943.12 : x
2. Step 2: Convert to fraction form
   9,921.84/13,692.72 = 5,943.12/x
3. Step 3: Cross multiply
   9,921.84x = 13,692.72 × 5,943.12
4. Step 4: Simplify right side
   9,921.84x = 81,377,478.09
5. Step 5: Solve for x
   x = 81,377,478.09/9,921.84
6. Step 6: Final answer
   x = 8,201.85