Finding the Fourth Proportional to 12,124.68, 16,734.78 and 7,930.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,124.68 : 16,734.78 = 7,930.50 : x
2. Step 2: Convert to fraction form
   12,124.68/16,734.78 = 7,930.50/x
3. Step 3: Cross multiply
   12,124.68x = 16,734.78 × 7,930.50
4. Step 4: Simplify right side
   12,124.68x = 132,715,172.79
5. Step 5: Solve for x
   x = 132,715,172.79/12,124.68
6. Step 6: Final answer
   x = 10,945.87