Finding the Fourth Proportional to 10,321.94, 15,452.12 and 10,145.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,321.94 : 15,452.12 = 10,145.61 : x
2. Step 2: Convert to fraction form
   10,321.94/15,452.12 = 10,145.61/x
3. Step 3: Cross multiply
   10,321.94x = 15,452.12 × 10,145.61
4. Step 4: Simplify right side
   10,321.94x = 156,771,132.47
5. Step 5: Solve for x
   x = 156,771,132.47/10,321.94
6. Step 6: Final answer
   x = 15,188.15