Finding the Fourth Proportional to 21,046.98, 31,535.78 and 18,876.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,046.98 : 31,535.78 = 18,876.72 : x
2. Step 2: Convert to fraction form
   21,046.98/31,535.78 = 18,876.72/x
3. Step 3: Cross multiply
   21,046.98x = 31,535.78 × 18,876.72
4. Step 4: Simplify right side
   21,046.98x = 595,292,089.04
5. Step 5: Solve for x
   x = 595,292,089.04/21,046.98
6. Step 6: Final answer
   x = 28,283.97