Finding the Fourth Proportional to 31,533.99, 47,320.83 and 12,814.49

Step by Step Solution

1. Step 1: Write the proportion equation
   31,533.99 : 47,320.83 = 12,814.49 : x
2. Step 2: Convert to fraction form
   31,533.99/47,320.83 = 12,814.49/x
3. Step 3: Cross multiply
   31,533.99x = 47,320.83 × 12,814.49
4. Step 4: Simplify right side
   31,533.99x = 606,392,066.22
5. Step 5: Solve for x
   x = 606,392,066.22/31,533.99
6. Step 6: Final answer
   x = 19,229.79