Finding the Fourth Proportional to 14,308.92, 21,553.56 and 13,434.12

Step by Step Solution

1. Step 1: Write the proportion equation
   14,308.92 : 21,553.56 = 13,434.12 : x
2. Step 2: Convert to fraction form
   14,308.92/21,553.56 = 13,434.12/x
3. Step 3: Cross multiply
   14,308.92x = 21,553.56 × 13,434.12
4. Step 4: Simplify right side
   14,308.92x = 289,553,111.47
5. Step 5: Solve for x
   x = 289,553,111.47/14,308.92
6. Step 6: Final answer
   x = 20,235.85