Finding the Fourth Proportional to 11,495.31, 17,241.74 and 7,111.59

Step by Step Solution

1. Step 1: Write the proportion equation
   11,495.31 : 17,241.74 = 7,111.59 : x
2. Step 2: Convert to fraction form
   11,495.31/17,241.74 = 7,111.59/x
3. Step 3: Cross multiply
   11,495.31x = 17,241.74 × 7,111.59
4. Step 4: Simplify right side
   11,495.31x = 122,616,185.77
5. Step 5: Solve for x
   x = 122,616,185.77/11,495.31
6. Step 6: Final answer
   x = 10,666.63