Finding the Fourth Proportional to 9,902.82, 13,665.50 and 5,921.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,902.82 : 13,665.50 = 5,921.56 : x
2. Step 2: Convert to fraction form
   9,902.82/13,665.50 = 5,921.56/x
3. Step 3: Cross multiply
   9,902.82x = 13,665.50 × 5,921.56
4. Step 4: Simplify right side
   9,902.82x = 80,921,078.18
5. Step 5: Solve for x
   x = 80,921,078.18/9,902.82
6. Step 6: Final answer
   x = 8,171.52