Finding the Fourth Proportional to 8,713.12, 12,021.78 and 4,935.46

Step by Step Solution

1. Step 1: Write the proportion equation
   8,713.12 : 12,021.78 = 4,935.46 : x
2. Step 2: Convert to fraction form
   8,713.12/12,021.78 = 4,935.46/x
3. Step 3: Cross multiply
   8,713.12x = 12,021.78 × 4,935.46
4. Step 4: Simplify right side
   8,713.12x = 59,333,014.32
5. Step 5: Solve for x
   x = 59,333,014.32/8,713.12
6. Step 6: Final answer
   x = 6,809.62