Finding the Fourth Proportional to 22,604.10, 31,187.33 and 13,170.84

Step by Step Solution

1. Step 1: Write the proportion equation
   22,604.10 : 31,187.33 = 13,170.84 : x
2. Step 2: Convert to fraction form
   22,604.10/31,187.33 = 13,170.84/x
3. Step 3: Cross multiply
   22,604.10x = 31,187.33 × 13,170.84
4. Step 4: Simplify right side
   22,604.10x = 410,763,300.53
5. Step 5: Solve for x
   x = 410,763,300.53/22,604.10
6. Step 6: Final answer
   x = 18,172.07