Finding the Fourth Proportional to 21,804.61, 32,717.72 and 8,656.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,804.61 : 32,717.72 = 8,656.69 : x
2. Step 2: Convert to fraction form
   21,804.61/32,717.72 = 8,656.69/x
3. Step 3: Cross multiply
   21,804.61x = 32,717.72 × 8,656.69
4. Step 4: Simplify right side
   21,804.61x = 283,227,159.55
5. Step 5: Solve for x
   x = 283,227,159.55/21,804.61
6. Step 6: Final answer
   x = 12,989.32