Finding the Fourth Proportional to 31,429.69, 43,369.34 and 18,000.15

Step by Step Solution

1. Step 1: Write the proportion equation
   31,429.69 : 43,369.34 = 18,000.15 : x
2. Step 2: Convert to fraction form
   31,429.69/43,369.34 = 18,000.15/x
3. Step 3: Cross multiply
   31,429.69x = 43,369.34 × 18,000.15
4. Step 4: Simplify right side
   31,429.69x = 780,654,474.02
5. Step 5: Solve for x
   x = 780,654,474.02/31,429.69
6. Step 6: Final answer
   x = 24,838.12