Finding the Fourth Proportional to 11,755.98, 17,570.34 and 10,821.96

Step by Step Solution

1. Step 1: Write the proportion equation
   11,755.98 : 17,570.34 = 10,821.96 : x
2. Step 2: Convert to fraction form
   11,755.98/17,570.34 = 10,821.96/x
3. Step 3: Cross multiply
   11,755.98x = 17,570.34 × 10,821.96
4. Step 4: Simplify right side
   11,755.98x = 190,145,516.67
5. Step 5: Solve for x
   x = 190,145,516.67/11,755.98
6. Step 6: Final answer
   x = 16,174.37