Finding the Fourth Proportional to 42,462.69, 63,703.20 and 12,882.91

Step by Step Solution

1. Step 1: Write the proportion equation
   42,462.69 : 63,703.20 = 12,882.91 : x
2. Step 2: Convert to fraction form
   42,462.69/63,703.20 = 12,882.91/x
3. Step 3: Cross multiply
   42,462.69x = 63,703.20 × 12,882.91
4. Step 4: Simplify right side
   42,462.69x = 820,682,400.85
5. Step 5: Solve for x
   x = 820,682,400.85/42,462.69
6. Step 6: Final answer
   x = 19,327.14