Finding the Fourth Proportional to 12,074.92, 16,638.42 and 9,707.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,074.92 : 16,638.42 = 9,707.56 : x
2. Step 2: Convert to fraction form
   12,074.92/16,638.42 = 9,707.56/x
3. Step 3: Cross multiply
   12,074.92x = 16,638.42 × 9,707.56
4. Step 4: Simplify right side
   12,074.92x = 161,518,460.46
5. Step 5: Solve for x
   x = 161,518,460.46/12,074.92
6. Step 6: Final answer
   x = 13,376.36