Finding the Fourth Proportional to 21,036.96, 31,533.04 and 15,826.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,036.96 : 31,533.04 = 15,826.72 : x
2. Step 2: Convert to fraction form
   21,036.96/31,533.04 = 15,826.72/x
3. Step 3: Cross multiply
   21,036.96x = 31,533.04 × 15,826.72
4. Step 4: Simplify right side
   21,036.96x = 499,064,594.83
5. Step 5: Solve for x
   x = 499,064,594.83/21,036.96
6. Step 6: Final answer
   x = 23,723.23