Finding the Fourth Proportional to 32,855.32, 49,281.42 and 13,128.52

Step by Step Solution

1. Step 1: Write the proportion equation
   32,855.32 : 49,281.42 = 13,128.52 : x
2. Step 2: Convert to fraction form
   32,855.32/49,281.42 = 13,128.52/x
3. Step 3: Cross multiply
   32,855.32x = 49,281.42 × 13,128.52
4. Step 4: Simplify right side
   32,855.32x = 646,992,108.10
5. Step 5: Solve for x
   x = 646,992,108.10/32,855.32
6. Step 6: Final answer
   x = 19,692.16