Finding the Fourth Proportional to 21,756.50, 32,634.78 and 5,340.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,756.50 : 32,634.78 = 5,340.50 : x
2. Step 2: Convert to fraction form
   21,756.50/32,634.78 = 5,340.50/x
3. Step 3: Cross multiply
   21,756.50x = 32,634.78 × 5,340.50
4. Step 4: Simplify right side
   21,756.50x = 174,286,042.59
5. Step 5: Solve for x
   x = 174,286,042.59/21,756.50
6. Step 6: Final answer
   x = 8,010.76