Finding the Fourth Proportional to 21,460.18, 32,185.32 and 8,309.02

Step by Step Solution

1. Step 1: Write the proportion equation
   21,460.18 : 32,185.32 = 8,309.02 : x
2. Step 2: Convert to fraction form
   21,460.18/32,185.32 = 8,309.02/x
3. Step 3: Cross multiply
   21,460.18x = 32,185.32 × 8,309.02
4. Step 4: Simplify right side
   21,460.18x = 267,428,467.59
5. Step 5: Solve for x
   x = 267,428,467.59/21,460.18
6. Step 6: Final answer
   x = 12,461.61