Finding the Fourth Proportional to 10,987.52, 16,461.43 and 9,243.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,987.52 : 16,461.43 = 9,243.38 : x
2. Step 2: Convert to fraction form
   10,987.52/16,461.43 = 9,243.38/x
3. Step 3: Cross multiply
   10,987.52x = 16,461.43 × 9,243.38
4. Step 4: Simplify right side
   10,987.52x = 152,159,270.88
5. Step 5: Solve for x
   x = 152,159,270.88/10,987.52
6. Step 6: Final answer
   x = 13,848.38