Finding the Fourth Proportional to 16,970.27, 23,447.15 and 13,412.51

Step by Step Solution

1. Step 1: Write the proportion equation
   16,970.27 : 23,447.15 = 13,412.51 : x
2. Step 2: Convert to fraction form
   16,970.27/23,447.15 = 13,412.51/x
3. Step 3: Cross multiply
   16,970.27x = 23,447.15 × 13,412.51
4. Step 4: Simplify right side
   16,970.27x = 314,485,133.85
5. Step 5: Solve for x
   x = 314,485,133.85/16,970.27
6. Step 6: Final answer
   x = 18,531.53