Finding the Fourth Proportional to 8,969.49, 12,377.74 and 4,990.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,969.49 : 12,377.74 = 4,990.52 : x
2. Step 2: Convert to fraction form
   8,969.49/12,377.74 = 4,990.52/x
3. Step 3: Cross multiply
   8,969.49x = 12,377.74 × 4,990.52
4. Step 4: Simplify right side
   8,969.49x = 61,771,311.89
5. Step 5: Solve for x
   x = 61,771,311.89/8,969.49
6. Step 6: Final answer
   x = 6,886.82