Finding the Fourth Proportional to 42,309.90, 63,473.22 and 12,726.42

Step by Step Solution

1. Step 1: Write the proportion equation
   42,309.90 : 63,473.22 = 12,726.42 : x
2. Step 2: Convert to fraction form
   42,309.90/63,473.22 = 12,726.42/x
3. Step 3: Cross multiply
   42,309.90x = 63,473.22 × 12,726.42
4. Step 4: Simplify right side
   42,309.90x = 807,786,856.47
5. Step 5: Solve for x
   x = 807,786,856.47/42,309.90
6. Step 6: Final answer
   x = 19,092.15