Finding the Fourth Proportional to 21,979.40, 32,945.86 and 7,184.34

Step by Step Solution

1. Step 1: Write the proportion equation
   21,979.40 : 32,945.86 = 7,184.34 : x
2. Step 2: Convert to fraction form
   21,979.40/32,945.86 = 7,184.34/x
3. Step 3: Cross multiply
   21,979.40x = 32,945.86 × 7,184.34
4. Step 4: Simplify right side
   21,979.40x = 236,694,259.83
5. Step 5: Solve for x
   x = 236,694,259.83/21,979.40
6. Step 6: Final answer
   x = 10,768.91