Finding the Fourth Proportional to 12,099.76, 18,132.72 and 6,556.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,099.76 : 18,132.72 = 6,556.12 : x
2. Step 2: Convert to fraction form
   12,099.76/18,132.72 = 6,556.12/x
3. Step 3: Cross multiply
   12,099.76x = 18,132.72 × 6,556.12
4. Step 4: Simplify right side
   12,099.76x = 118,880,288.25
5. Step 5: Solve for x
   x = 118,880,288.25/12,099.76
6. Step 6: Final answer
   x = 9,825.01