Finding the Fourth Proportional to 8,885.30, 12,261.78 and 4,906.17

Step by Step Solution

1. Step 1: Write the proportion equation
   8,885.30 : 12,261.78 = 4,906.17 : x
2. Step 2: Convert to fraction form
   8,885.30/12,261.78 = 4,906.17/x
3. Step 3: Cross multiply
   8,885.30x = 12,261.78 × 4,906.17
4. Step 4: Simplify right side
   8,885.30x = 60,158,377.18
5. Step 5: Solve for x
   x = 60,158,377.18/8,885.30
6. Step 6: Final answer
   x = 6,770.55