Finding the Fourth Proportional to 12,456.29, 17,263.87 and 12,223.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,456.29 : 17,263.87 = 12,223.01 : x
2. Step 2: Convert to fraction form
   12,456.29/17,263.87 = 12,223.01/x
3. Step 3: Cross multiply
   12,456.29x = 17,263.87 × 12,223.01
4. Step 4: Simplify right side
   12,456.29x = 211,016,308.21
5. Step 5: Solve for x
   x = 211,016,308.21/12,456.29
6. Step 6: Final answer
   x = 16,940.55