Finding the Fourth Proportional to 12,314.22, 16,991.64 and 7,009.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,314.22 : 16,991.64 = 7,009.12 : x
2. Step 2: Convert to fraction form
   12,314.22/16,991.64 = 7,009.12/x
3. Step 3: Cross multiply
   12,314.22x = 16,991.64 × 7,009.12
4. Step 4: Simplify right side
   12,314.22x = 119,096,443.76
5. Step 5: Solve for x
   x = 119,096,443.76/12,314.22
6. Step 6: Final answer
   x = 9,671.46