Finding the Fourth Proportional to 22,472.05, 31,011.24 and 12,400.59

Step by Step Solution

1. Step 1: Write the proportion equation
   22,472.05 : 31,011.24 = 12,400.59 : x
2. Step 2: Convert to fraction form
   22,472.05/31,011.24 = 12,400.59/x
3. Step 3: Cross multiply
   22,472.05x = 31,011.24 × 12,400.59
4. Step 4: Simplify right side
   22,472.05x = 384,557,672.63
5. Step 5: Solve for x
   x = 384,557,672.63/22,472.05
6. Step 6: Final answer
   x = 17,112.71