Finding the Fourth Proportional to 21,042.86, 31,573.56 and 16,355.86

Step by Step Solution

1. Step 1: Write the proportion equation
   21,042.86 : 31,573.56 = 16,355.86 : x
2. Step 2: Convert to fraction form
   21,042.86/31,573.56 = 16,355.86/x
3. Step 3: Cross multiply
   21,042.86x = 31,573.56 × 16,355.86
4. Step 4: Simplify right side
   21,042.86x = 516,412,709.46
5. Step 5: Solve for x
   x = 516,412,709.46/21,042.86
6. Step 6: Final answer
   x = 24,541.00