Finding the Fourth Proportional to 8,707.98, 12,016.56 and 4,931.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,707.98 : 12,016.56 = 4,931.76 : x
2. Step 2: Convert to fraction form
   8,707.98/12,016.56 = 4,931.76/x
3. Step 3: Cross multiply
   8,707.98x = 12,016.56 × 4,931.76
4. Step 4: Simplify right side
   8,707.98x = 59,262,789.95
5. Step 5: Solve for x
   x = 59,262,789.95/8,707.98
6. Step 6: Final answer
   x = 6,805.57