Finding the Fourth Proportional to 8,799.54, 12,142.89 and 4,820.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,799.54 : 12,142.89 = 4,820.55 : x
2. Step 2: Convert to fraction form
   8,799.54/12,142.89 = 4,820.55/x
3. Step 3: Cross multiply
   8,799.54x = 12,142.89 × 4,820.55
4. Step 4: Simplify right side
   8,799.54x = 58,535,408.39
5. Step 5: Solve for x
   x = 58,535,408.39/8,799.54
6. Step 6: Final answer
   x = 6,652.10