Finding the Fourth Proportional to 9,486.72, 14,231.91 and 3,642.87

Step by Step Solution

1. Step 1: Write the proportion equation
   9,486.72 : 14,231.91 = 3,642.87 : x
2. Step 2: Convert to fraction form
   9,486.72/14,231.91 = 3,642.87/x
3. Step 3: Cross multiply
   9,486.72x = 14,231.91 × 3,642.87
4. Step 4: Simplify right side
   9,486.72x = 51,844,997.98
5. Step 5: Solve for x
   x = 51,844,997.98/9,486.72
6. Step 6: Final answer
   x = 5,465.01