Finding the Fourth Proportional to 21,342.72, 32,007.60 and 10,953.12

Step by Step Solution

1. Step 1: Write the proportion equation
   21,342.72 : 32,007.60 = 10,953.12 : x
2. Step 2: Convert to fraction form
   21,342.72/32,007.60 = 10,953.12/x
3. Step 3: Cross multiply
   21,342.72x = 32,007.60 × 10,953.12
4. Step 4: Simplify right side
   21,342.72x = 350,583,083.71
5. Step 5: Solve for x
   x = 350,583,083.71/21,342.72
6. Step 6: Final answer
   x = 16,426.35