Finding the Fourth Proportional to 21,034.33, 31,516.72 and 18,863.73

Step by Step Solution

1. Step 1: Write the proportion equation
   21,034.33 : 31,516.72 = 18,863.73 : x
2. Step 2: Convert to fraction form
   21,034.33/31,516.72 = 18,863.73/x
3. Step 3: Cross multiply
   21,034.33x = 31,516.72 × 18,863.73
4. Step 4: Simplify right side
   21,034.33x = 594,522,880.30
5. Step 5: Solve for x
   x = 594,522,880.30/21,034.33
6. Step 6: Final answer
   x = 28,264.41