Finding the Fourth Proportional to 11,689.72, 17,534.94 and 5,112.52

Step by Step Solution

1. Step 1: Write the proportion equation
   11,689.72 : 17,534.94 = 5,112.52 : x
2. Step 2: Convert to fraction form
   11,689.72/17,534.94 = 5,112.52/x
3. Step 3: Cross multiply
   11,689.72x = 17,534.94 × 5,112.52
4. Step 4: Simplify right side
   11,689.72x = 89,647,731.45
5. Step 5: Solve for x
   x = 89,647,731.45/11,689.72
6. Step 6: Final answer
   x = 7,668.94