Finding the Fourth Proportional to 14,399.78, 21,557.91 and 8,836.34

Step by Step Solution

1. Step 1: Write the proportion equation
   14,399.78 : 21,557.91 = 8,836.34 : x
2. Step 2: Convert to fraction form
   14,399.78/21,557.91 = 8,836.34/x
3. Step 3: Cross multiply
   14,399.78x = 21,557.91 × 8,836.34
4. Step 4: Simplify right side
   14,399.78x = 190,493,022.45
5. Step 5: Solve for x
   x = 190,493,022.45/14,399.78
6. Step 6: Final answer
   x = 13,228.88