Finding the Fourth Proportional to 12,199.58, 18,285.42 and 5,541.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,199.58 : 18,285.42 = 5,541.15 : x
2. Step 2: Convert to fraction form
   12,199.58/18,285.42 = 5,541.15/x
3. Step 3: Cross multiply
   12,199.58x = 18,285.42 × 5,541.15
4. Step 4: Simplify right side
   12,199.58x = 101,322,255.03
5. Step 5: Solve for x
   x = 101,322,255.03/12,199.58
6. Step 6: Final answer
   x = 8,305.39