Finding the Fourth Proportional to 15,463.48, 21,339.33 and 9,411.53

Step by Step Solution

1. Step 1: Write the proportion equation
   15,463.48 : 21,339.33 = 9,411.53 : x
2. Step 2: Convert to fraction form
   15,463.48/21,339.33 = 9,411.53/x
3. Step 3: Cross multiply
   15,463.48x = 21,339.33 × 9,411.53
4. Step 4: Simplify right side
   15,463.48x = 200,835,744.47
5. Step 5: Solve for x
   x = 200,835,744.47/15,463.48
6. Step 6: Final answer
   x = 12,987.75