Finding the Fourth Proportional to 8,427.57, 11,627.33 and 4,842.11

Step by Step Solution

1. Step 1: Write the proportion equation
   8,427.57 : 11,627.33 = 4,842.11 : x
2. Step 2: Convert to fraction form
   8,427.57/11,627.33 = 4,842.11/x
3. Step 3: Cross multiply
   8,427.57x = 11,627.33 × 4,842.11
4. Step 4: Simplify right side
   8,427.57x = 56,300,728.52
5. Step 5: Solve for x
   x = 56,300,728.52/8,427.57
6. Step 6: Final answer
   x = 6,680.54