Finding the Fourth Proportional to 22,168.66, 30,588.56 and 13,216.99

Step by Step Solution

1. Step 1: Write the proportion equation
   22,168.66 : 30,588.56 = 13,216.99 : x
2. Step 2: Convert to fraction form
   22,168.66/30,588.56 = 13,216.99/x
3. Step 3: Cross multiply
   22,168.66x = 30,588.56 × 13,216.99
4. Step 4: Simplify right side
   22,168.66x = 404,288,691.63
5. Step 5: Solve for x
   x = 404,288,691.63/22,168.66
6. Step 6: Final answer
   x = 18,236.95