Finding the Fourth Proportional to 21,802.61, 32,714.72 and 8,654.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,802.61 : 32,714.72 = 8,654.69 : x
2. Step 2: Convert to fraction form
   21,802.61/32,714.72 = 8,654.69/x
3. Step 3: Cross multiply
   21,802.61x = 32,714.72 × 8,654.69
4. Step 4: Simplify right side
   21,802.61x = 283,135,863.46
5. Step 5: Solve for x
   x = 283,135,863.46/21,802.61
6. Step 6: Final answer
   x = 12,986.33