Finding the Fourth Proportional to 21,956.32, 32,939.31 and 8,630.60

Step by Step Solution

1. Step 1: Write the proportion equation
   21,956.32 : 32,939.31 = 8,630.60 : x
2. Step 2: Convert to fraction form
   21,956.32/32,939.31 = 8,630.60/x
3. Step 3: Cross multiply
   21,956.32x = 32,939.31 × 8,630.60
4. Step 4: Simplify right side
   21,956.32x = 284,286,008.89
5. Step 5: Solve for x
   x = 284,286,008.89/21,956.32
6. Step 6: Final answer
   x = 12,947.80