Finding the Fourth Proportional to 8,477.16, 12,699.34 and 4,768.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,477.16 : 12,699.34 = 4,768.12 : x
2. Step 2: Convert to fraction form
   8,477.16/12,699.34 = 4,768.12/x
3. Step 3: Cross multiply
   8,477.16x = 12,699.34 × 4,768.12
4. Step 4: Simplify right side
   8,477.16x = 60,551,977.04
5. Step 5: Solve for x
   x = 60,551,977.04/8,477.16
6. Step 6: Final answer
   x = 7,142.96