Finding the Fourth Proportional to 8,796.79, 12,140.98 and 5,021.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,796.79 : 12,140.98 = 5,021.20 : x
2. Step 2: Convert to fraction form
   8,796.79/12,140.98 = 5,021.20/x
3. Step 3: Cross multiply
   8,796.79x = 12,140.98 × 5,021.20
4. Step 4: Simplify right side
   8,796.79x = 60,962,271.37
5. Step 5: Solve for x
   x = 60,962,271.37/8,796.79
6. Step 6: Final answer
   x = 6,930.06