Finding the Fourth Proportional to 11,736.50, 17,610.48 and 5,161.86

Step by Step Solution

1. Step 1: Write the proportion equation
   11,736.50 : 17,610.48 = 5,161.86 : x
2. Step 2: Convert to fraction form
   11,736.50/17,610.48 = 5,161.86/x
3. Step 3: Cross multiply
   11,736.50x = 17,610.48 × 5,161.86
4. Step 4: Simplify right side
   11,736.50x = 90,902,832.29
5. Step 5: Solve for x
   x = 90,902,832.29/11,736.50
6. Step 6: Final answer
   x = 7,745.31