Finding the Fourth Proportional to 10,105.43, 15,158.12 and 10,090.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,105.43 : 15,158.12 = 10,090.82 : x
2. Step 2: Convert to fraction form
   10,105.43/15,158.12 = 10,090.82/x
3. Step 3: Cross multiply
   10,105.43x = 15,158.12 × 10,090.82
4. Step 4: Simplify right side
   10,105.43x = 152,957,847.90
5. Step 5: Solve for x
   x = 152,957,847.90/10,105.43
6. Step 6: Final answer
   x = 15,136.21