Finding the Fourth Proportional to 22,696.25, 31,320.83 and 12,760.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,696.25 : 31,320.83 = 12,760.25 : x
2. Step 2: Convert to fraction form
   22,696.25/31,320.83 = 12,760.25/x
3. Step 3: Cross multiply
   22,696.25x = 31,320.83 × 12,760.25
4. Step 4: Simplify right side
   22,696.25x = 399,661,557.21
5. Step 5: Solve for x
   x = 399,661,557.21/22,696.25
6. Step 6: Final answer
   x = 17,609.15