Finding the Fourth Proportional to 8,906.94, 12,290.99 and 4,927.77

Step by Step Solution

1. Step 1: Write the proportion equation
   8,906.94 : 12,290.99 = 4,927.77 : x
2. Step 2: Convert to fraction form
   8,906.94/12,290.99 = 4,927.77/x
3. Step 3: Cross multiply
   8,906.94x = 12,290.99 × 4,927.77
4. Step 4: Simplify right side
   8,906.94x = 60,567,147.15
5. Step 5: Solve for x
   x = 60,567,147.15/8,906.94
6. Step 6: Final answer
   x = 6,799.99