Finding the Fourth Proportional to 21,986.06, 32,978.77 and 5,346.05

Step by Step Solution

1. Step 1: Write the proportion equation
   21,986.06 : 32,978.77 = 5,346.05 : x
2. Step 2: Convert to fraction form
   21,986.06/32,978.77 = 5,346.05/x
3. Step 3: Cross multiply
   21,986.06x = 32,978.77 × 5,346.05
4. Step 4: Simplify right side
   21,986.06x = 176,305,975.10
5. Step 5: Solve for x
   x = 176,305,975.10/21,986.06
6. Step 6: Final answer
   x = 8,018.99