Finding the Fourth Proportional to 21,774.72, 32,652.72 and 6,978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,774.72 : 32,652.72 = 6,978.72 : x
2. Step 2: Convert to fraction form
   21,774.72/32,652.72 = 6,978.72/x
3. Step 3: Cross multiply
   21,774.72x = 32,652.72 × 6,978.72
4. Step 4: Simplify right side
   21,774.72x = 227,874,190.12
5. Step 5: Solve for x
   x = 227,874,190.12/21,774.72
6. Step 6: Final answer
   x = 10,465.08