Finding the Fourth Proportional to 10,987.84, 16,401.83 and 10,175.68

Step by Step Solution

1. Step 1: Write the proportion equation
   10,987.84 : 16,401.83 = 10,175.68 : x
2. Step 2: Convert to fraction form
   10,987.84/16,401.83 = 10,175.68/x
3. Step 3: Cross multiply
   10,987.84x = 16,401.83 × 10,175.68
4. Step 4: Simplify right side
   10,987.84x = 166,899,773.49
5. Step 5: Solve for x
   x = 166,899,773.49/10,987.84
6. Step 6: Final answer
   x = 15,189.50