Finding the Fourth Proportional to 8,776.57, 12,111.39 and 4,797.67

Step by Step Solution

1. Step 1: Write the proportion equation
   8,776.57 : 12,111.39 = 4,797.67 : x
2. Step 2: Convert to fraction form
   8,776.57/12,111.39 = 4,797.67/x
3. Step 3: Cross multiply
   8,776.57x = 12,111.39 × 4,797.67
4. Step 4: Simplify right side
   8,776.57x = 58,106,428.47
5. Step 5: Solve for x
   x = 58,106,428.47/8,776.57
6. Step 6: Final answer
   x = 6,620.63