Finding the Fourth Proportional to 22,128.69, 33,180.80 and 8,788.17

Step by Step Solution

1. Step 1: Write the proportion equation
   22,128.69 : 33,180.80 = 8,788.17 : x
2. Step 2: Convert to fraction form
   22,128.69/33,180.80 = 8,788.17/x
3. Step 3: Cross multiply
   22,128.69x = 33,180.80 × 8,788.17
4. Step 4: Simplify right side
   22,128.69x = 291,598,467.20
5. Step 5: Solve for x
   x = 291,598,467.20/22,128.69
6. Step 6: Final answer
   x = 13,177.39