Finding the Fourth Proportional to 12,994.45, 19,493.73 and 4,227.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,994.45 : 19,493.73 = 4,227.31 : x
2. Step 2: Convert to fraction form
   12,994.45/19,493.73 = 4,227.31/x
3. Step 3: Cross multiply
   12,994.45x = 19,493.73 × 4,227.31
4. Step 4: Simplify right side
   12,994.45x = 82,406,039.77
5. Step 5: Solve for x
   x = 82,406,039.77/12,994.45
6. Step 6: Final answer
   x = 6,341.63