Finding the Fourth Proportional to 22,379.34, 30,883.56 and 12,308.40

Step by Step Solution

1. Step 1: Write the proportion equation
   22,379.34 : 30,883.56 = 12,308.40 : x
2. Step 2: Convert to fraction form
   22,379.34/30,883.56 = 12,308.40/x
3. Step 3: Cross multiply
   22,379.34x = 30,883.56 × 12,308.40
4. Step 4: Simplify right side
   22,379.34x = 380,127,209.90
5. Step 5: Solve for x
   x = 380,127,209.90/22,379.34
6. Step 6: Final answer
   x = 16,985.63