Finding the Fourth Proportional to 22,939.63, 34,369.59 and 12,416.91

Step by Step Solution

1. Step 1: Write the proportion equation
   22,939.63 : 34,369.59 = 12,416.91 : x
2. Step 2: Convert to fraction form
   22,939.63/34,369.59 = 12,416.91/x
3. Step 3: Cross multiply
   22,939.63x = 34,369.59 × 12,416.91
4. Step 4: Simplify right side
   22,939.63x = 426,764,105.77
5. Step 5: Solve for x
   x = 426,764,105.77/22,939.63
6. Step 6: Final answer
   x = 18,603.79