Finding the Fourth Proportional to 12,309.82, 17,102.24 and 12,162.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,309.82 : 17,102.24 = 12,162.20 : x
2. Step 2: Convert to fraction form
   12,309.82/17,102.24 = 12,162.20/x
3. Step 3: Cross multiply
   12,309.82x = 17,102.24 × 12,162.20
4. Step 4: Simplify right side
   12,309.82x = 208,000,858.81
5. Step 5: Solve for x
   x = 208,000,858.81/12,309.82
6. Step 6: Final answer
   x = 16,897.14