Finding the Fourth Proportional to 11,587.47, 15,989.50 and 7,111.41

Step by Step Solution

1. Step 1: Write the proportion equation
   11,587.47 : 15,989.50 = 7,111.41 : x
2. Step 2: Convert to fraction form
   11,587.47/15,989.50 = 7,111.41/x
3. Step 3: Cross multiply
   11,587.47x = 15,989.50 × 7,111.41
4. Step 4: Simplify right side
   11,587.47x = 113,707,890.20
5. Step 5: Solve for x
   x = 113,707,890.20/11,587.47
6. Step 6: Final answer
   x = 9,813.00