Finding the Fourth Proportional to 8,906.29, 12,290.50 and 4,927.57

Step by Step Solution

1. Step 1: Write the proportion equation
   8,906.29 : 12,290.50 = 4,927.57 : x
2. Step 2: Convert to fraction form
   8,906.29/12,290.50 = 4,927.57/x
3. Step 3: Cross multiply
   8,906.29x = 12,290.50 × 4,927.57
4. Step 4: Simplify right side
   8,906.29x = 60,562,274.52
5. Step 5: Solve for x
   x = 60,562,274.52/8,906.29
6. Step 6: Final answer
   x = 6,799.95