Finding the Fourth Proportional to 9,418.41, 12,984.71 and 7,819.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,418.41 : 12,984.71 = 7,819.34 : x
2. Step 2: Convert to fraction form
   9,418.41/12,984.71 = 7,819.34/x
3. Step 3: Cross multiply
   9,418.41x = 12,984.71 × 7,819.34
4. Step 4: Simplify right side
   9,418.41x = 101,531,758.27
5. Step 5: Solve for x
   x = 101,531,758.27/9,418.41
6. Step 6: Final answer
   x = 10,780.14