Finding the Fourth Proportional to 21,861.36, 32,796.69 and 7,069.15

Step by Step Solution

1. Step 1: Write the proportion equation
   21,861.36 : 32,796.69 = 7,069.15 : x
2. Step 2: Convert to fraction form
   21,861.36/32,796.69 = 7,069.15/x
3. Step 3: Cross multiply
   21,861.36x = 32,796.69 × 7,069.15
4. Step 4: Simplify right side
   21,861.36x = 231,844,735.60
5. Step 5: Solve for x
   x = 231,844,735.60/21,861.36
6. Step 6: Final answer
   x = 10,605.23