Finding the Fourth Proportional to 12,289.53, 18,430.29 and 3,967.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,289.53 : 18,430.29 = 3,967.59 : x
2. Step 2: Convert to fraction form
   12,289.53/18,430.29 = 3,967.59/x
3. Step 3: Cross multiply
   12,289.53x = 18,430.29 × 3,967.59
4. Step 4: Simplify right side
   12,289.53x = 73,123,834.30
5. Step 5: Solve for x
   x = 73,123,834.30/12,289.53
6. Step 6: Final answer
   x = 5,950.09