Finding the Fourth Proportional to 8,921.48, 12,310.38 and 4,942.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,921.48 : 12,310.38 = 4,942.82 : x
2. Step 2: Convert to fraction form
   8,921.48/12,310.38 = 4,942.82/x
3. Step 3: Cross multiply
   8,921.48x = 12,310.38 × 4,942.82
4. Step 4: Simplify right side
   8,921.48x = 60,848,023.25
5. Step 5: Solve for x
   x = 60,848,023.25/8,921.48
6. Step 6: Final answer
   x = 6,820.40