Finding the Fourth Proportional to 11,681.82, 17,524.71 and 5,107.86

Step by Step Solution

1. Step 1: Write the proportion equation
   11,681.82 : 17,524.71 = 5,107.86 : x
2. Step 2: Convert to fraction form
   11,681.82/17,524.71 = 5,107.86/x
3. Step 3: Cross multiply
   11,681.82x = 17,524.71 × 5,107.86
4. Step 4: Simplify right side
   11,681.82x = 89,513,765.22
5. Step 5: Solve for x
   x = 89,513,765.22/11,681.82
6. Step 6: Final answer
   x = 7,662.66