Finding the Fourth Proportional to 21,116.54, 31,652.94 and 17,379.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,116.54 : 31,652.94 = 17,379.50 : x
2. Step 2: Convert to fraction form
   21,116.54/31,652.94 = 17,379.50/x
3. Step 3: Cross multiply
   21,116.54x = 31,652.94 × 17,379.50
4. Step 4: Simplify right side
   21,116.54x = 550,112,371.39
5. Step 5: Solve for x
   x = 550,112,371.39/21,116.54
6. Step 6: Final answer
   x = 26,051.26