Finding the Fourth Proportional to 23,989.61, 33,105.72 and 13,379.93

Step by Step Solution

1. Step 1: Write the proportion equation
   23,989.61 : 33,105.72 = 13,379.93 : x
2. Step 2: Convert to fraction form
   23,989.61/33,105.72 = 13,379.93/x
3. Step 3: Cross multiply
   23,989.61x = 33,105.72 × 13,379.93
4. Step 4: Simplify right side
   23,989.61x = 442,952,216.20
5. Step 5: Solve for x
   x = 442,952,216.20/23,989.61
6. Step 6: Final answer
   x = 18,464.34