Finding the Fourth Proportional to 8,748.43, 12,072.90 and 4,769.57

Step by Step Solution

1. Step 1: Write the proportion equation
   8,748.43 : 12,072.90 = 4,769.57 : x
2. Step 2: Convert to fraction form
   8,748.43/12,072.90 = 4,769.57/x
3. Step 3: Cross multiply
   8,748.43x = 12,072.90 × 4,769.57
4. Step 4: Simplify right side
   8,748.43x = 57,582,576.10
5. Step 5: Solve for x
   x = 57,582,576.10/8,748.43
6. Step 6: Final answer
   x = 6,582.05