Finding the Fourth Proportional to 22,153.91, 30,571.63 and 13,196.76

Step by Step Solution

1. Step 1: Write the proportion equation
   22,153.91 : 30,571.63 = 13,196.76 : x
2. Step 2: Convert to fraction form
   22,153.91/30,571.63 = 13,196.76/x
3. Step 3: Cross multiply
   22,153.91x = 30,571.63 × 13,196.76
4. Step 4: Simplify right side
   22,153.91x = 403,446,316.28
5. Step 5: Solve for x
   x = 403,446,316.28/22,153.91
6. Step 6: Final answer
   x = 18,211.07