Finding the Fourth Proportional to 22,407.52, 30,932.80 and 12,974.24

Step by Step Solution

1. Step 1: Write the proportion equation
   22,407.52 : 30,932.80 = 12,974.24 : x
2. Step 2: Convert to fraction form
   22,407.52/30,932.80 = 12,974.24/x
3. Step 3: Cross multiply
   22,407.52x = 30,932.80 × 12,974.24
4. Step 4: Simplify right side
   22,407.52x = 401,329,571.07
5. Step 5: Solve for x
   x = 401,329,571.07/22,407.52
6. Step 6: Final answer
   x = 17,910.49