Finding the Fourth Proportional to 22,390.25, 30,898.73 and 12,454.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,390.25 : 30,898.73 = 12,454.25 : x
2. Step 2: Convert to fraction form
   22,390.25/30,898.73 = 12,454.25/x
3. Step 3: Cross multiply
   22,390.25x = 30,898.73 × 12,454.25
4. Step 4: Simplify right side
   22,390.25x = 384,820,445.83
5. Step 5: Solve for x
   x = 384,820,445.83/22,390.25
6. Step 6: Final answer
   x = 17,186.97