Finding the Fourth Proportional to 12,969.43, 19,456.70 and 4,647.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,969.43 : 19,456.70 = 4,647.22 : x
2. Step 2: Convert to fraction form
   12,969.43/19,456.70 = 4,647.22/x
3. Step 3: Cross multiply
   12,969.43x = 19,456.70 × 4,647.22
4. Step 4: Simplify right side
   12,969.43x = 90,419,493.50
5. Step 5: Solve for x
   x = 90,419,493.50/12,969.43
6. Step 6: Final answer
   x = 6,971.74