Finding the Fourth Proportional to 10,973.72, 16,444.15 and 10,153.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,973.72 : 16,444.15 = 10,153.60 : x
2. Step 2: Convert to fraction form
   10,973.72/16,444.15 = 10,153.60/x
3. Step 3: Cross multiply
   10,973.72x = 16,444.15 × 10,153.60
4. Step 4: Simplify right side
   10,973.72x = 166,967,321.44
5. Step 5: Solve for x
   x = 166,967,321.44/10,973.72
6. Step 6: Final answer
   x = 15,215.20