Finding the Fourth Proportional to 32,456.25, 48,684.69 and 12,736.80

Step by Step Solution

1. Step 1: Write the proportion equation
   32,456.25 : 48,684.69 = 12,736.80 : x
2. Step 2: Convert to fraction form
   32,456.25/48,684.69 = 12,736.80/x
3. Step 3: Cross multiply
   32,456.25x = 48,684.69 × 12,736.80
4. Step 4: Simplify right side
   32,456.25x = 620,087,159.59
5. Step 5: Solve for x
   x = 620,087,159.59/32,456.25
6. Step 6: Final answer
   x = 19,105.32