Finding the Fourth Proportional to 10,701.10, 16,131.85 and 9,987.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,701.10 : 16,131.85 = 9,987.49 : x
2. Step 2: Convert to fraction form
   10,701.10/16,131.85 = 9,987.49/x
3. Step 3: Cross multiply
   10,701.10x = 16,131.85 × 9,987.49
4. Step 4: Simplify right side
   10,701.10x = 161,116,690.56
5. Step 5: Solve for x
   x = 161,116,690.56/10,701.10
6. Step 6: Final answer
   x = 15,056.09