Finding the Fourth Proportional to 11,641.49, 17,456.19 and 5,715.73

Step by Step Solution

1. Step 1: Write the proportion equation
   11,641.49 : 17,456.19 = 5,715.73 : x
2. Step 2: Convert to fraction form
   11,641.49/17,456.19 = 5,715.73/x
3. Step 3: Cross multiply
   11,641.49x = 17,456.19 × 5,715.73
4. Step 4: Simplify right side
   11,641.49x = 99,774,869.25
5. Step 5: Solve for x
   x = 99,774,869.25/11,641.49
6. Step 6: Final answer
   x = 8,570.63