Finding the Fourth Proportional to 21,434.16, 32,020.89 and 13,876.14

Step by Step Solution

1. Step 1: Write the proportion equation
   21,434.16 : 32,020.89 = 13,876.14 : x
2. Step 2: Convert to fraction form
   21,434.16/32,020.89 = 13,876.14/x
3. Step 3: Cross multiply
   21,434.16x = 32,020.89 × 13,876.14
4. Step 4: Simplify right side
   21,434.16x = 444,326,352.56
5. Step 5: Solve for x
   x = 444,326,352.56/21,434.16
6. Step 6: Final answer
   x = 20,729.82