Finding the Fourth Proportional to 21,933.72, 32,895.72 and 8,782.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,933.72 : 32,895.72 = 8,782.56 : x
2. Step 2: Convert to fraction form
   21,933.72/32,895.72 = 8,782.56/x
3. Step 3: Cross multiply
   21,933.72x = 32,895.72 × 8,782.56
4. Step 4: Simplify right side
   21,933.72x = 288,908,634.64
5. Step 5: Solve for x
   x = 288,908,634.64/21,933.72
6. Step 6: Final answer
   x = 13,171.89