Finding the Fourth Proportional to 21,779.82, 32,459.81 and 21,342.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,779.82 : 32,459.81 = 21,342.42 : x
2. Step 2: Convert to fraction form
   21,779.82/32,459.81 = 21,342.42/x
3. Step 3: Cross multiply
   21,779.82x = 32,459.81 × 21,342.42
4. Step 4: Simplify right side
   21,779.82x = 692,770,791.43
5. Step 5: Solve for x
   x = 692,770,791.43/21,779.82
6. Step 6: Final answer
   x = 31,807.92