Finding the Fourth Proportional to 21,653.63, 32,457.86 and 10,545.04

Step by Step Solution

1. Step 1: Write the proportion equation
   21,653.63 : 32,457.86 = 10,545.04 : x
2. Step 2: Convert to fraction form
   21,653.63/32,457.86 = 10,545.04/x
3. Step 3: Cross multiply
   21,653.63x = 32,457.86 × 10,545.04
4. Step 4: Simplify right side
   21,653.63x = 342,269,336.15
5. Step 5: Solve for x
   x = 342,269,336.15/21,653.63
6. Step 6: Final answer
   x = 15,806.56