Finding the Fourth Proportional to 21,822.71, 32,736.18 and 8,672.13

Step by Step Solution

1. Step 1: Write the proportion equation
   21,822.71 : 32,736.18 = 8,672.13 : x
2. Step 2: Convert to fraction form
   21,822.71/32,736.18 = 8,672.13/x
3. Step 3: Cross multiply
   21,822.71x = 32,736.18 × 8,672.13
4. Step 4: Simplify right side
   21,822.71x = 283,892,408.66
5. Step 5: Solve for x
   x = 283,892,408.66/21,822.71
6. Step 6: Final answer
   x = 13,009.04