Finding the Fourth Proportional to 10,635.32, 15,930.89 and 8,986.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,635.32 : 15,930.89 = 8,986.08 : x
2. Step 2: Convert to fraction form
   10,635.32/15,930.89 = 8,986.08/x
3. Step 3: Cross multiply
   10,635.32x = 15,930.89 × 8,986.08
4. Step 4: Simplify right side
   10,635.32x = 143,156,149.89
5. Step 5: Solve for x
   x = 143,156,149.89/10,635.32
6. Step 6: Final answer
   x = 13,460.44