Finding the Fourth Proportional to 21,978.46, 32,967.24 and 5,338.58

Step by Step Solution

1. Step 1: Write the proportion equation
   21,978.46 : 32,967.24 = 5,338.58 : x
2. Step 2: Convert to fraction form
   21,978.46/32,967.24 = 5,338.58/x
3. Step 3: Cross multiply
   21,978.46x = 32,967.24 × 5,338.58
4. Step 4: Simplify right side
   21,978.46x = 175,998,248.12
5. Step 5: Solve for x
   x = 175,998,248.12/21,978.46
6. Step 6: Final answer
   x = 8,007.76