Finding the Fourth Proportional to 22,418.46, 30,937.58 and 12,858.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,418.46 : 30,937.58 = 12,858.72 : x
2. Step 2: Convert to fraction form
   22,418.46/30,937.58 = 12,858.72/x
3. Step 3: Cross multiply
   22,418.46x = 30,937.58 × 12,858.72
4. Step 4: Simplify right side
   22,418.46x = 397,817,614.40
5. Step 5: Solve for x
   x = 397,817,614.40/22,418.46
6. Step 6: Final answer
   x = 17,745.09