Finding the Fourth Proportional to 8,484.72, 12,715.56 and 4,383.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,484.72 : 12,715.56 = 4,383.60 : x
2. Step 2: Convert to fraction form
   8,484.72/12,715.56 = 4,383.60/x
3. Step 3: Cross multiply
   8,484.72x = 12,715.56 × 4,383.60
4. Step 4: Simplify right side
   8,484.72x = 55,739,928.82
5. Step 5: Solve for x
   x = 55,739,928.82/8,484.72
6. Step 6: Final answer
   x = 6,569.45