Finding the Fourth Proportional to 22,700, 31,326 and 13,276.48

Step by Step Solution

1. Step 1: Write the proportion equation
   22,700 : 31,326 = 13,276.48 : x
2. Step 2: Convert to fraction form
   22,700/31,326 = 13,276.48/x
3. Step 3: Cross multiply
   22,700x = 31,326 × 13,276.48
4. Step 4: Simplify right side
   22,700x = 415,899,012.48
5. Step 5: Solve for x
   x = 415,899,012.48/22,700
6. Step 6: Final answer
   x = 18,321.54