Finding the Fourth Proportional to 12,328.56, 18,498.24 and 4,539.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,328.56 : 18,498.24 = 4,539.60 : x
2. Step 2: Convert to fraction form
   12,328.56/18,498.24 = 4,539.60/x
3. Step 3: Cross multiply
   12,328.56x = 18,498.24 × 4,539.60
4. Step 4: Simplify right side
   12,328.56x = 83,974,610.30
5. Step 5: Solve for x
   x = 83,974,610.30/12,328.56
6. Step 6: Final answer
   x = 6,811.39