Finding the Fourth Proportional to 31,981.86, 47,952.24 and 13,274.79

Step by Step Solution

1. Step 1: Write the proportion equation
   31,981.86 : 47,952.24 = 13,274.79 : x
2. Step 2: Convert to fraction form
   31,981.86/47,952.24 = 13,274.79/x
3. Step 3: Cross multiply
   31,981.86x = 47,952.24 × 13,274.79
4. Step 4: Simplify right side
   31,981.86x = 636,555,916.03
5. Step 5: Solve for x
   x = 636,555,916.03/31,981.86
6. Step 6: Final answer
   x = 19,903.66