Finding the Fourth Proportional to 10,706.72, 16,019.76 and 7,426.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,706.72 : 16,019.76 = 7,426.16 : x
2. Step 2: Convert to fraction form
   10,706.72/16,019.76 = 7,426.16/x
3. Step 3: Cross multiply
   10,706.72x = 16,019.76 × 7,426.16
4. Step 4: Simplify right side
   10,706.72x = 118,965,300.92
5. Step 5: Solve for x
   x = 118,965,300.92/10,706.72
6. Step 6: Final answer
   x = 11,111.27