Finding the Fourth Proportional to 8,770.51, 12,102.78 and 4,790.83

Step by Step Solution

1. Step 1: Write the proportion equation
   8,770.51 : 12,102.78 = 4,790.83 : x
2. Step 2: Convert to fraction form
   8,770.51/12,102.78 = 4,790.83/x
3. Step 3: Cross multiply
   8,770.51x = 12,102.78 × 4,790.83
4. Step 4: Simplify right side
   8,770.51x = 57,982,361.51
5. Step 5: Solve for x
   x = 57,982,361.51/8,770.51
6. Step 6: Final answer
   x = 6,611.06