Finding the Fourth Proportional to 31,591.94, 47,415.20 and 12,882.29

Step by Step Solution

1. Step 1: Write the proportion equation
   31,591.94 : 47,415.20 = 12,882.29 : x
2. Step 2: Convert to fraction form
   31,591.94/47,415.20 = 12,882.29/x
3. Step 3: Cross multiply
   31,591.94x = 47,415.20 × 12,882.29
4. Step 4: Simplify right side
   31,591.94x = 610,816,055.32
5. Step 5: Solve for x
   x = 610,816,055.32/31,591.94
6. Step 6: Final answer
   x = 19,334.56