Finding the Fourth Proportional to 8,483.38, 12,731.90 and 4,789.18

Step by Step Solution

1. Step 1: Write the proportion equation
   8,483.38 : 12,731.90 = 4,789.18 : x
2. Step 2: Convert to fraction form
   8,483.38/12,731.90 = 4,789.18/x
3. Step 3: Cross multiply
   8,483.38x = 12,731.90 × 4,789.18
4. Step 4: Simplify right side
   8,483.38x = 60,975,360.84
5. Step 5: Solve for x
   x = 60,975,360.84/8,483.38
6. Step 6: Final answer
   x = 7,187.63