Finding the Fourth Proportional to 10,227.42, 15,345.09 and 3,987.99

Step by Step Solution

1. Step 1: Write the proportion equation
   10,227.42 : 15,345.09 = 3,987.99 : x
2. Step 2: Convert to fraction form
   10,227.42/15,345.09 = 3,987.99/x
3. Step 3: Cross multiply
   10,227.42x = 15,345.09 × 3,987.99
4. Step 4: Simplify right side
   10,227.42x = 61,196,065.47
5. Step 5: Solve for x
   x = 61,196,065.47/10,227.42
6. Step 6: Final answer
   x = 5,983.53