Finding the Fourth Proportional to 8,707.30, 12,016.17 and 4,728.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,707.30 : 12,016.17 = 4,728.47 : x
2. Step 2: Convert to fraction form
   8,707.30/12,016.17 = 4,728.47/x
3. Step 3: Cross multiply
   8,707.30x = 12,016.17 × 4,728.47
4. Step 4: Simplify right side
   8,707.30x = 56,818,039.28
5. Step 5: Solve for x
   x = 56,818,039.28/8,707.30
6. Step 6: Final answer
   x = 6,525.34