Finding the Fourth Proportional to 21,667.23, 32,407.01 and 12,761.33

Step by Step Solution

1. Step 1: Write the proportion equation
   21,667.23 : 32,407.01 = 12,761.33 : x
2. Step 2: Convert to fraction form
   21,667.23/32,407.01 = 12,761.33/x
3. Step 3: Cross multiply
   21,667.23x = 32,407.01 × 12,761.33
4. Step 4: Simplify right side
   21,667.23x = 413,556,370.94
5. Step 5: Solve for x
   x = 413,556,370.94/21,667.23
6. Step 6: Final answer
   x = 19,086.72