Finding the Fourth Proportional to 12,938.46, 17,861.52 and 8,768.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,938.46 : 17,861.52 = 8,768.58 : x
2. Step 2: Convert to fraction form
   12,938.46/17,861.52 = 8,768.58/x
3. Step 3: Cross multiply
   12,938.46x = 17,861.52 × 8,768.58
4. Step 4: Simplify right side
   12,938.46x = 156,620,167.04
5. Step 5: Solve for x
   x = 156,620,167.04/12,938.46
6. Step 6: Final answer
   x = 12,105.01