Finding the Fourth Proportional to 7,972.24, 10,998.72 and 4,986.94

Step by Step Solution

1. Step 1: Write the proportion equation
   7,972.24 : 10,998.72 = 4,986.94 : x
2. Step 2: Convert to fraction form
   7,972.24/10,998.72 = 4,986.94/x
3. Step 3: Cross multiply
   7,972.24x = 10,998.72 × 4,986.94
4. Step 4: Simplify right side
   7,972.24x = 54,849,956.72
5. Step 5: Solve for x
   x = 54,849,956.72/7,972.24
6. Step 6: Final answer
   x = 6,880.12