Finding the Fourth Proportional to 24,128.45, 33,299.12 and 13,921.31

Step by Step Solution

1. Step 1: Write the proportion equation
   24,128.45 : 33,299.12 = 13,921.31 : x
2. Step 2: Convert to fraction form
   24,128.45/33,299.12 = 13,921.31/x
3. Step 3: Cross multiply
   24,128.45x = 33,299.12 × 13,921.31
4. Step 4: Simplify right side
   24,128.45x = 463,567,385.89
5. Step 5: Solve for x
   x = 463,567,385.89/24,128.45
6. Step 6: Final answer
   x = 19,212.48