Finding the Fourth Proportional to 31,392.58, 47,090.49 and 8,019.22

Step by Step Solution

1. Step 1: Write the proportion equation
   31,392.58 : 47,090.49 = 8,019.22 : x
2. Step 2: Convert to fraction form
   31,392.58/47,090.49 = 8,019.22/x
3. Step 3: Cross multiply
   31,392.58x = 47,090.49 × 8,019.22
4. Step 4: Simplify right side
   31,392.58x = 377,628,999.22
5. Step 5: Solve for x
   x = 377,628,999.22/31,392.58
6. Step 6: Final answer
   x = 12,029.24