Finding the Fourth Proportional to 22,417.80, 30,936.42 and 12,345.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,417.80 : 30,936.42 = 12,345.72 : x
2. Step 2: Convert to fraction form
   22,417.80/30,936.42 = 12,345.72/x
3. Step 3: Cross multiply
   22,417.80x = 30,936.42 × 12,345.72
4. Step 4: Simplify right side
   22,417.80x = 381,932,379.12
5. Step 5: Solve for x
   x = 381,932,379.12/22,417.80
6. Step 6: Final answer
   x = 17,037.01