Finding the Fourth Proportional to 22,603.50, 31,193.12 and 13,045.38

Step by Step Solution

1. Step 1: Write the proportion equation
   22,603.50 : 31,193.12 = 13,045.38 : x
2. Step 2: Convert to fraction form
   22,603.50/31,193.12 = 13,045.38/x
3. Step 3: Cross multiply
   22,603.50x = 31,193.12 × 13,045.38
4. Step 4: Simplify right side
   22,603.50x = 406,926,019.42
5. Step 5: Solve for x
   x = 406,926,019.42/22,603.50
6. Step 6: Final answer
   x = 18,002.79