Finding the Fourth Proportional to 22,129.91, 30,538.89 and 12,058.43

Step by Step Solution

1. Step 1: Write the proportion equation
   22,129.91 : 30,538.89 = 12,058.43 : x
2. Step 2: Convert to fraction form
   22,129.91/30,538.89 = 12,058.43/x
3. Step 3: Cross multiply
   22,129.91x = 30,538.89 × 12,058.43
4. Step 4: Simplify right side
   22,129.91x = 368,251,067.34
5. Step 5: Solve for x
   x = 368,251,067.34/22,129.91
6. Step 6: Final answer
   x = 16,640.42