Finding the Fourth Proportional to 39,290.50, 58,929.98 and 12,995.62

Step by Step Solution

1. Step 1: Write the proportion equation
   39,290.50 : 58,929.98 = 12,995.62 : x
2. Step 2: Convert to fraction form
   39,290.50/58,929.98 = 12,995.62/x
3. Step 3: Cross multiply
   39,290.50x = 58,929.98 × 12,995.62
4. Step 4: Simplify right side
   39,290.50x = 765,831,626.69
5. Step 5: Solve for x
   x = 765,831,626.69/39,290.50
6. Step 6: Final answer
   x = 19,491.52