Finding the Fourth Proportional to 8,598.72, 12,888.24 and 3,972

Step by Step Solution

1. Step 1: Write the proportion equation
   8,598.72 : 12,888.24 = 3,972 : x
2. Step 2: Convert to fraction form
   8,598.72/12,888.24 = 3,972/x
3. Step 3: Cross multiply
   8,598.72x = 12,888.24 × 3,972
4. Step 4: Simplify right side
   8,598.72x = 51,192,089.28
5. Step 5: Solve for x
   x = 51,192,089.28/8,598.72
6. Step 6: Final answer
   x = 5,953.45