Finding the Fourth Proportional to 30,584.64, 42,167.34 and 20,514.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,584.64 : 42,167.34 = 20,514.72 : x
2. Step 2: Convert to fraction form
   30,584.64/42,167.34 = 20,514.72/x
3. Step 3: Cross multiply
   30,584.64x = 42,167.34 × 20,514.72
4. Step 4: Simplify right side
   30,584.64x = 865,051,173.24
5. Step 5: Solve for x
   x = 865,051,173.24/30,584.64
6. Step 6: Final answer
   x = 28,283.84