Finding the Fourth Proportional to 10,868.09, 16,271.10 and 7,158.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,868.09 : 16,271.10 = 7,158.96 : x
2. Step 2: Convert to fraction form
   10,868.09/16,271.10 = 7,158.96/x
3. Step 3: Cross multiply
   10,868.09x = 16,271.10 × 7,158.96
4. Step 4: Simplify right side
   10,868.09x = 116,484,154.06
5. Step 5: Solve for x
   x = 116,484,154.06/10,868.09
6. Step 6: Final answer
   x = 10,718.00