Finding the Fourth Proportional to 11,087.20, 16,655.10 and 8,184.16

Step by Step Solution

1. Step 1: Write the proportion equation
   11,087.20 : 16,655.10 = 8,184.16 : x
2. Step 2: Convert to fraction form
   11,087.20/16,655.10 = 8,184.16/x
3. Step 3: Cross multiply
   11,087.20x = 16,655.10 × 8,184.16
4. Step 4: Simplify right side
   11,087.20x = 136,308,003.22
5. Step 5: Solve for x
   x = 136,308,003.22/11,087.20
6. Step 6: Final answer
   x = 12,294.18