Finding the Fourth Proportional to 10,863.45, 14,989.05 and 7,271.91

Step by Step Solution

1. Step 1: Write the proportion equation
   10,863.45 : 14,989.05 = 7,271.91 : x
2. Step 2: Convert to fraction form
   10,863.45/14,989.05 = 7,271.91/x
3. Step 3: Cross multiply
   10,863.45x = 14,989.05 × 7,271.91
4. Step 4: Simplify right side
   10,863.45x = 108,999,022.59
5. Step 5: Solve for x
   x = 108,999,022.59/10,863.45
6. Step 6: Final answer
   x = 10,033.55