Finding the Fourth Proportional to 12,074.72, 18,097.44 and 5,499.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,074.72 : 18,097.44 = 5,499.20 : x
2. Step 2: Convert to fraction form
   12,074.72/18,097.44 = 5,499.20/x
3. Step 3: Cross multiply
   12,074.72x = 18,097.44 × 5,499.20
4. Step 4: Simplify right side
   12,074.72x = 99,521,442.05
5. Step 5: Solve for x
   x = 99,521,442.05/12,074.72
6. Step 6: Final answer
   x = 8,242.13