Finding the Fourth Proportional to 22,379.45, 30,881.22 and 12,946.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,379.45 : 30,881.22 = 12,946.25 : x
2. Step 2: Convert to fraction form
   22,379.45/30,881.22 = 12,946.25/x
3. Step 3: Cross multiply
   22,379.45x = 30,881.22 × 12,946.25
4. Step 4: Simplify right side
   22,379.45x = 399,795,994.43
5. Step 5: Solve for x
   x = 399,795,994.43/22,379.45
6. Step 6: Final answer
   x = 17,864.42