Finding the Fourth Proportional to 31,914.90, 47,892.18 and 12,195.42

Step by Step Solution

1. Step 1: Write the proportion equation
   31,914.90 : 47,892.18 = 12,195.42 : x
2. Step 2: Convert to fraction form
   31,914.90/47,892.18 = 12,195.42/x
3. Step 3: Cross multiply
   31,914.90x = 47,892.18 × 12,195.42
4. Step 4: Simplify right side
   31,914.90x = 584,065,249.82
5. Step 5: Solve for x
   x = 584,065,249.82/31,914.90
6. Step 6: Final answer
   x = 18,300.71