Finding the Fourth Proportional to 10,636.53, 15,960.84 and 10,066.47

Step by Step Solution

1. Step 1: Write the proportion equation
   10,636.53 : 15,960.84 = 10,066.47 : x
2. Step 2: Convert to fraction form
   10,636.53/15,960.84 = 10,066.47/x
3. Step 3: Cross multiply
   10,636.53x = 15,960.84 × 10,066.47
4. Step 4: Simplify right side
   10,636.53x = 160,669,317.03
5. Step 5: Solve for x
   x = 160,669,317.03/10,636.53
6. Step 6: Final answer
   x = 15,105.43