Finding the Fourth Proportional to 11,691.23, 17,526.41 and 5,112.21

Step by Step Solution

1. Step 1: Write the proportion equation
   11,691.23 : 17,526.41 = 5,112.21 : x
2. Step 2: Convert to fraction form
   11,691.23/17,526.41 = 5,112.21/x
3. Step 3: Cross multiply
   11,691.23x = 17,526.41 × 5,112.21
4. Step 4: Simplify right side
   11,691.23x = 89,598,662.91
5. Step 5: Solve for x
   x = 89,598,662.91/11,691.23
6. Step 6: Final answer
   x = 7,663.75