Finding the Fourth Proportional to 17,373.50, 23,974.78 and 9,415.55

Step by Step Solution

1. Step 1: Write the proportion equation
   17,373.50 : 23,974.78 = 9,415.55 : x
2. Step 2: Convert to fraction form
   17,373.50/23,974.78 = 9,415.55/x
3. Step 3: Cross multiply
   17,373.50x = 23,974.78 × 9,415.55
4. Step 4: Simplify right side
   17,373.50x = 225,735,703.98
5. Step 5: Solve for x
   x = 225,735,703.98/17,373.50
6. Step 6: Final answer
   x = 12,993.11