Finding the Fourth Proportional to 12,259.50, 18,389.30 and 3,025.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,259.50 : 18,389.30 = 3,025.50 : x
2. Step 2: Convert to fraction form
   12,259.50/18,389.30 = 3,025.50/x
3. Step 3: Cross multiply
   12,259.50x = 18,389.30 × 3,025.50
4. Step 4: Simplify right side
   12,259.50x = 55,636,812.02
5. Step 5: Solve for x
   x = 55,636,812.02/12,259.50
6. Step 6: Final answer
   x = 4,538.26