Finding the Fourth Proportional to 12,284.34, 18,426.45 and 4,491.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,284.34 : 18,426.45 = 4,491.30 : x
2. Step 2: Convert to fraction form
   12,284.34/18,426.45 = 4,491.30/x
3. Step 3: Cross multiply
   12,284.34x = 18,426.45 × 4,491.30
4. Step 4: Simplify right side
   12,284.34x = 82,758,714.89
5. Step 5: Solve for x
   x = 82,758,714.89/12,284.34
6. Step 6: Final answer
   x = 6,736.93