Finding the Fourth Proportional to 26,453.50, 39,667.22 and 13,111.18

Step by Step Solution

1. Step 1: Write the proportion equation
   26,453.50 : 39,667.22 = 13,111.18 : x
2. Step 2: Convert to fraction form
   26,453.50/39,667.22 = 13,111.18/x
3. Step 3: Cross multiply
   26,453.50x = 39,667.22 × 13,111.18
4. Step 4: Simplify right side
   26,453.50x = 520,084,061.52
5. Step 5: Solve for x
   x = 520,084,061.52/26,453.50
6. Step 6: Final answer
   x = 19,660.31