Finding the Fourth Proportional to 21,457.48, 32,167.62 and 8,300.80

Step by Step Solution

1. Step 1: Write the proportion equation
   21,457.48 : 32,167.62 = 8,300.80 : x
2. Step 2: Convert to fraction form
   21,457.48/32,167.62 = 8,300.80/x
3. Step 3: Cross multiply
   21,457.48x = 32,167.62 × 8,300.80
4. Step 4: Simplify right side
   21,457.48x = 267,016,980.10
5. Step 5: Solve for x
   x = 267,016,980.10/21,457.48
6. Step 6: Final answer
   x = 12,444.00