Finding the Fourth Proportional to 12,150.56, 18,233.70 and 4,359.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,150.56 : 18,233.70 = 4,359.20 : x
2. Step 2: Convert to fraction form
   12,150.56/18,233.70 = 4,359.20/x
3. Step 3: Cross multiply
   12,150.56x = 18,233.70 × 4,359.20
4. Step 4: Simplify right side
   12,150.56x = 79,484,345.04
5. Step 5: Solve for x
   x = 79,484,345.04/12,150.56
6. Step 6: Final answer
   x = 6,541.62