Finding the Fourth Proportional to 8,698.72, 12,005.04 and 4,972

Step by Step Solution

1. Step 1: Write the proportion equation
   8,698.72 : 12,005.04 = 4,972 : x
2. Step 2: Convert to fraction form
   8,698.72/12,005.04 = 4,972/x
3. Step 3: Cross multiply
   8,698.72x = 12,005.04 × 4,972
4. Step 4: Simplify right side
   8,698.72x = 59,689,058.88
5. Step 5: Solve for x
   x = 59,689,058.88/8,698.72
6. Step 6: Final answer
   x = 6,861.82