Finding the Fourth Proportional to 8,104.89, 12,152.70 and 4,820.28

Step by Step Solution

1. Step 1: Write the proportion equation
   8,104.89 : 12,152.70 = 4,820.28 : x
2. Step 2: Convert to fraction form
   8,104.89/12,152.70 = 4,820.28/x
3. Step 3: Cross multiply
   8,104.89x = 12,152.70 × 4,820.28
4. Step 4: Simplify right side
   8,104.89x = 58,579,416.76
5. Step 5: Solve for x
   x = 58,579,416.76/8,104.89
6. Step 6: Final answer
   x = 7,227.66