Finding the Fourth Proportional to 21,655.12, 32,456.52 and 10,545.16

Step by Step Solution

1. Step 1: Write the proportion equation
   21,655.12 : 32,456.52 = 10,545.16 : x
2. Step 2: Convert to fraction form
   21,655.12/32,456.52 = 10,545.16/x
3. Step 3: Cross multiply
   21,655.12x = 32,456.52 × 10,545.16
4. Step 4: Simplify right side
   21,655.12x = 342,259,196.44
5. Step 5: Solve for x
   x = 342,259,196.44/21,655.12
6. Step 6: Final answer
   x = 15,805.00