Finding the Fourth Proportional to 17,370.72, 23,971.50 and 9,412.74

Step by Step Solution

1. Step 1: Write the proportion equation
   17,370.72 : 23,971.50 = 9,412.74 : x
2. Step 2: Convert to fraction form
   17,370.72/23,971.50 = 9,412.74/x
3. Step 3: Cross multiply
   17,370.72x = 23,971.50 × 9,412.74
4. Step 4: Simplify right side
   17,370.72x = 225,637,496.91
5. Step 5: Solve for x
   x = 225,637,496.91/17,370.72
6. Step 6: Final answer
   x = 12,989.53