Finding the Fourth Proportional to 21,357.59, 32,069.30 and 18,069.04

Step by Step Solution

1. Step 1: Write the proportion equation
   21,357.59 : 32,069.30 = 18,069.04 : x
2. Step 2: Convert to fraction form
   21,357.59/32,069.30 = 18,069.04/x
3. Step 3: Cross multiply
   21,357.59x = 32,069.30 × 18,069.04
4. Step 4: Simplify right side
   21,357.59x = 579,461,464.47
5. Step 5: Solve for x
   x = 579,461,464.47/21,357.59
6. Step 6: Final answer
   x = 27,131.41