Finding the Fourth Proportional to 10,871.07, 16,314.83 and 7,172.07

Step by Step Solution

1. Step 1: Write the proportion equation
   10,871.07 : 16,314.83 = 7,172.07 : x
2. Step 2: Convert to fraction form
   10,871.07/16,314.83 = 7,172.07/x
3. Step 3: Cross multiply
   10,871.07x = 16,314.83 × 7,172.07
4. Step 4: Simplify right side
   10,871.07x = 117,011,102.80
5. Step 5: Solve for x
   x = 117,011,102.80/10,871.07
6. Step 6: Final answer
   x = 10,763.53