Finding the Fourth Proportional to 31,359.69, 47,026.26 and 12,634.69

Step by Step Solution

1. Step 1: Write the proportion equation
   31,359.69 : 47,026.26 = 12,634.69 : x
2. Step 2: Convert to fraction form
   31,359.69/47,026.26 = 12,634.69/x
3. Step 3: Cross multiply
   31,359.69x = 47,026.26 × 12,634.69
4. Step 4: Simplify right side
   31,359.69x = 594,162,153.79
5. Step 5: Solve for x
   x = 594,162,153.79/31,359.69
6. Step 6: Final answer
   x = 18,946.69