Finding the Fourth Proportional to 15,432.45, 21,300.37 and 10,957.61

Step by Step Solution

1. Step 1: Write the proportion equation
   15,432.45 : 21,300.37 = 10,957.61 : x
2. Step 2: Convert to fraction form
   15,432.45/21,300.37 = 10,957.61/x
3. Step 3: Cross multiply
   15,432.45x = 21,300.37 × 10,957.61
4. Step 4: Simplify right side
   15,432.45x = 233,401,013.42
5. Step 5: Solve for x
   x = 233,401,013.42/15,432.45
6. Step 6: Final answer
   x = 15,124.04