Finding the Fourth Proportional to 31,940.58, 47,904.69 and 12,214.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,940.58 : 47,904.69 = 12,214.50 : x
2. Step 2: Convert to fraction form
   31,940.58/47,904.69 = 12,214.50/x
3. Step 3: Cross multiply
   31,940.58x = 47,904.69 × 12,214.50
4. Step 4: Simplify right side
   31,940.58x = 585,131,836.01
5. Step 5: Solve for x
   x = 585,131,836.01/31,940.58
6. Step 6: Final answer
   x = 18,319.39