Finding the Fourth Proportional to 8,921.15, 12,310.83 and 4,942.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,921.15 : 12,310.83 = 4,942.32 : x
2. Step 2: Convert to fraction form
   8,921.15/12,310.83 = 4,942.32/x
3. Step 3: Cross multiply
   8,921.15x = 12,310.83 × 4,942.32
4. Step 4: Simplify right side
   8,921.15x = 60,844,061.33
5. Step 5: Solve for x
   x = 60,844,061.33/8,921.15
6. Step 6: Final answer
   x = 6,820.21