Finding the Fourth Proportional to 10,926.50, 16,370.91 and 8,601.39

Step by Step Solution

1. Step 1: Write the proportion equation
   10,926.50 : 16,370.91 = 8,601.39 : x
2. Step 2: Convert to fraction form
   10,926.50/16,370.91 = 8,601.39/x
3. Step 3: Cross multiply
   10,926.50x = 16,370.91 × 8,601.39
4. Step 4: Simplify right side
   10,926.50x = 140,812,581.56
5. Step 5: Solve for x
   x = 140,812,581.56/10,926.50
6. Step 6: Final answer
   x = 12,887.26