Finding the Fourth Proportional to 32,705.33, 45,138.51 and 19,961.28

Step by Step Solution

1. Step 1: Write the proportion equation
   32,705.33 : 45,138.51 = 19,961.28 : x
2. Step 2: Convert to fraction form
   32,705.33/45,138.51 = 19,961.28/x
3. Step 3: Cross multiply
   32,705.33x = 45,138.51 × 19,961.28
4. Step 4: Simplify right side
   32,705.33x = 901,022,436.89
5. Step 5: Solve for x
   x = 901,022,436.89/32,705.33
6. Step 6: Final answer
   x = 27,549.72