Finding the Fourth Proportional to 12,302.72, 18,443.84 and 5,725.44

Step by Step Solution

1. Step 1: Write the proportion equation
   12,302.72 : 18,443.84 = 5,725.44 : x
2. Step 2: Convert to fraction form
   12,302.72/18,443.84 = 5,725.44/x
3. Step 3: Cross multiply
   12,302.72x = 18,443.84 × 5,725.44
4. Step 4: Simplify right side
   12,302.72x = 105,599,099.29
5. Step 5: Solve for x
   x = 105,599,099.29/12,302.72
6. Step 6: Final answer
   x = 8,583.39