Finding the Fourth Proportional to 8,909.89, 12,295.34 and 4,931.17

Step by Step Solution

1. Step 1: Write the proportion equation
   8,909.89 : 12,295.34 = 4,931.17 : x
2. Step 2: Convert to fraction form
   8,909.89/12,295.34 = 4,931.17/x
3. Step 3: Cross multiply
   8,909.89x = 12,295.34 × 4,931.17
4. Step 4: Simplify right side
   8,909.89x = 60,630,350.27
5. Step 5: Solve for x
   x = 60,630,350.27/8,909.89
6. Step 6: Final answer
   x = 6,804.84