Finding the Fourth Proportional to 22,379.31, 30,882.80 and 12,307.74

Step by Step Solution

1. Step 1: Write the proportion equation
   22,379.31 : 30,882.80 = 12,307.74 : x
2. Step 2: Convert to fraction form
   22,379.31/30,882.80 = 12,307.74/x
3. Step 3: Cross multiply
   22,379.31x = 30,882.80 × 12,307.74
4. Step 4: Simplify right side
   22,379.31x = 380,097,411.33
5. Step 5: Solve for x
   x = 380,097,411.33/22,379.31
6. Step 6: Final answer
   x = 16,984.32