Finding the Fourth Proportional to 22,345, 30,834.32 and 12,914.20

Step by Step Solution

1. Step 1: Write the proportion equation
   22,345 : 30,834.32 = 12,914.20 : x
2. Step 2: Convert to fraction form
   22,345/30,834.32 = 12,914.20/x
3. Step 3: Cross multiply
   22,345x = 30,834.32 × 12,914.20
4. Step 4: Simplify right side
   22,345x = 398,200,575.34
5. Step 5: Solve for x
   x = 398,200,575.34/22,345
6. Step 6: Final answer
   x = 17,820.57