Finding the Fourth Proportional to 8,288.06, 12,420.72 and 4,384.67

Step by Step Solution

1. Step 1: Write the proportion equation
   8,288.06 : 12,420.72 = 4,384.67 : x
2. Step 2: Convert to fraction form
   8,288.06/12,420.72 = 4,384.67/x
3. Step 3: Cross multiply
   8,288.06x = 12,420.72 × 4,384.67
4. Step 4: Simplify right side
   8,288.06x = 54,460,758.36
5. Step 5: Solve for x
   x = 54,460,758.36/8,288.06
6. Step 6: Final answer
   x = 6,570.99