Finding the Fourth Proportional to 30,515.52, 42,079.32 and 22,574.28

Step by Step Solution

1. Step 1: Write the proportion equation
   30,515.52 : 42,079.32 = 22,574.28 : x
2. Step 2: Convert to fraction form
   30,515.52/42,079.32 = 22,574.28/x
3. Step 3: Cross multiply
   30,515.52x = 42,079.32 × 22,574.28
4. Step 4: Simplify right side
   30,515.52x = 949,910,351.89
5. Step 5: Solve for x
   x = 949,910,351.89/30,515.52
6. Step 6: Final answer
   x = 31,128.76