Finding the Fourth Proportional to 21,978.32, 32,972.94 and 6,395.94

Step by Step Solution

1. Step 1: Write the proportion equation
   21,978.32 : 32,972.94 = 6,395.94 : x
2. Step 2: Convert to fraction form
   21,978.32/32,972.94 = 6,395.94/x
3. Step 3: Cross multiply
   21,978.32x = 32,972.94 × 6,395.94
4. Step 4: Simplify right side
   21,978.32x = 210,892,945.86
5. Step 5: Solve for x
   x = 210,892,945.86/21,978.32
6. Step 6: Final answer
   x = 9,595.50