Finding the Fourth Proportional to 12,971.67, 17,884.53 and 8,488.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,971.67 : 17,884.53 = 8,488.32 : x
2. Step 2: Convert to fraction form
   12,971.67/17,884.53 = 8,488.32/x
3. Step 3: Cross multiply
   12,971.67x = 17,884.53 × 8,488.32
4. Step 4: Simplify right side
   12,971.67x = 151,809,613.69
5. Step 5: Solve for x
   x = 151,809,613.69/12,971.67
6. Step 6: Final answer
   x = 11,703.17