Finding the Fourth Proportional to 10,287.03, 15,386.60 and 8,588.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,287.03 : 15,386.60 = 8,588.10 : x
2. Step 2: Convert to fraction form
   10,287.03/15,386.60 = 8,588.10/x
3. Step 3: Cross multiply
   10,287.03x = 15,386.60 × 8,588.10
4. Step 4: Simplify right side
   10,287.03x = 132,141,616.52
5. Step 5: Solve for x
   x = 132,141,616.52/10,287.03
6. Step 6: Final answer
   x = 12,845.46