Finding the Fourth Proportional to 21,870.41, 32,784.48 and 7,069.28

Step by Step Solution

1. Step 1: Write the proportion equation
   21,870.41 : 32,784.48 = 7,069.28 : x
2. Step 2: Convert to fraction form
   21,870.41/32,784.48 = 7,069.28/x
3. Step 3: Cross multiply
   21,870.41x = 32,784.48 × 7,069.28
4. Step 4: Simplify right side
   21,870.41x = 231,762,504.85
5. Step 5: Solve for x
   x = 231,762,504.85/21,870.41
6. Step 6: Final answer
   x = 10,597.08