Finding the Fourth Proportional to 8,869.41, 12,239.82 and 4,890.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,869.41 : 12,239.82 = 4,890.42 : x
2. Step 2: Convert to fraction form
   8,869.41/12,239.82 = 4,890.42/x
3. Step 3: Cross multiply
   8,869.41x = 12,239.82 × 4,890.42
4. Step 4: Simplify right side
   8,869.41x = 59,857,860.52
5. Step 5: Solve for x
   x = 59,857,860.52/8,869.41
6. Step 6: Final answer
   x = 6,748.80