Finding the Fourth Proportional to 17,188.80, 23,722.08 and 10,111.68

Step by Step Solution

1. Step 1: Write the proportion equation
   17,188.80 : 23,722.08 = 10,111.68 : x
2. Step 2: Convert to fraction form
   17,188.80/23,722.08 = 10,111.68/x
3. Step 3: Cross multiply
   17,188.80x = 23,722.08 × 10,111.68
4. Step 4: Simplify right side
   17,188.80x = 239,870,081.89
5. Step 5: Solve for x
   x = 239,870,081.89/17,188.80
6. Step 6: Final answer
   x = 13,955.02