Finding the Fourth Proportional to 21,678.34, 32,505.18 and 8,523.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,678.34 : 32,505.18 = 8,523.52 : x
2. Step 2: Convert to fraction form
   21,678.34/32,505.18 = 8,523.52/x
3. Step 3: Cross multiply
   21,678.34x = 32,505.18 × 8,523.52
4. Step 4: Simplify right side
   21,678.34x = 277,058,551.83
5. Step 5: Solve for x
   x = 277,058,551.83/21,678.34
6. Step 6: Final answer
   x = 12,780.43