Finding the Fourth Proportional to 9,111.03, 12,491.21 and 8,944.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,111.03 : 12,491.21 = 8,944.98 : x
2. Step 2: Convert to fraction form
   9,111.03/12,491.21 = 8,944.98/x
3. Step 3: Cross multiply
   9,111.03x = 12,491.21 × 8,944.98
4. Step 4: Simplify right side
   9,111.03x = 111,733,669.41
5. Step 5: Solve for x
   x = 111,733,669.41/9,111.03
6. Step 6: Final answer
   x = 12,263.56