Finding the Fourth Proportional to 21,807.56, 29,884.73 and 19,708.04

Step by Step Solution

1. Step 1: Write the proportion equation
   21,807.56 : 29,884.73 = 19,708.04 : x
2. Step 2: Convert to fraction form
   21,807.56/29,884.73 = 19,708.04/x
3. Step 3: Cross multiply
   21,807.56x = 29,884.73 × 19,708.04
4. Step 4: Simplify right side
   21,807.56x = 588,969,454.23
5. Step 5: Solve for x
   x = 588,969,454.23/21,807.56
6. Step 6: Final answer
   x = 27,007.58