Finding the Fourth Proportional to 32,600.80, 48,813.59 and 20,690.09

Step by Step Solution

1. Step 1: Write the proportion equation
   32,600.80 : 48,813.59 = 20,690.09 : x
2. Step 2: Convert to fraction form
   32,600.80/48,813.59 = 20,690.09/x
3. Step 3: Cross multiply
   32,600.80x = 48,813.59 × 20,690.09
4. Step 4: Simplify right side
   32,600.80x = 1,009,957,570.32
5. Step 5: Solve for x
   x = 1,009,957,570.32/32,600.80
6. Step 6: Final answer
   x = 30,979.53