Finding the Fourth Proportional to 22,447.45, 30,975.37 and 13,015

Step by Step Solution

1. Step 1: Write the proportion equation
   22,447.45 : 30,975.37 = 13,015 : x
2. Step 2: Convert to fraction form
   22,447.45/30,975.37 = 13,015/x
3. Step 3: Cross multiply
   22,447.45x = 30,975.37 × 13,015
4. Step 4: Simplify right side
   22,447.45x = 403,144,440.55
5. Step 5: Solve for x
   x = 403,144,440.55/22,447.45
6. Step 6: Final answer
   x = 17,959.48