Finding the Fourth Proportional to 12,910.50, 17,817.57 and 7,322.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,910.50 : 17,817.57 = 7,322.58 : x
2. Step 2: Convert to fraction form
   12,910.50/17,817.57 = 7,322.58/x
3. Step 3: Cross multiply
   12,910.50x = 17,817.57 × 7,322.58
4. Step 4: Simplify right side
   12,910.50x = 130,470,581.73
5. Step 5: Solve for x
   x = 130,470,581.73/12,910.50
6. Step 6: Final answer
   x = 10,105.77