Finding the Fourth Proportional to 8,784.65, 12,122.72 and 4,805.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,784.65 : 12,122.72 = 4,805.72 : x
2. Step 2: Convert to fraction form
   8,784.65/12,122.72 = 4,805.72/x
3. Step 3: Cross multiply
   8,784.65x = 12,122.72 × 4,805.72
4. Step 4: Simplify right side
   8,784.65x = 58,258,325.33
5. Step 5: Solve for x
   x = 58,258,325.33/8,784.65
6. Step 6: Final answer
   x = 6,631.83