Finding the Fourth Proportional to 28,196.38, 42,267.12 and 15,704.92

Step by Step Solution

1. Step 1: Write the proportion equation
   28,196.38 : 42,267.12 = 15,704.92 : x
2. Step 2: Convert to fraction form
   28,196.38/42,267.12 = 15,704.92/x
3. Step 3: Cross multiply
   28,196.38x = 42,267.12 × 15,704.92
4. Step 4: Simplify right side
   28,196.38x = 663,801,738.23
5. Step 5: Solve for x
   x = 663,801,738.23/28,196.38
6. Step 6: Final answer
   x = 23,542.09