Finding the Fourth Proportional to 43,021.83, 64,541.86 and 13,441.89

Step by Step Solution

1. Step 1: Write the proportion equation
   43,021.83 : 64,541.86 = 13,441.89 : x
2. Step 2: Convert to fraction form
   43,021.83/64,541.86 = 13,441.89/x
3. Step 3: Cross multiply
   43,021.83x = 64,541.86 × 13,441.89
4. Step 4: Simplify right side
   43,021.83x = 867,564,582.52
5. Step 5: Solve for x
   x = 867,564,582.52/43,021.83
6. Step 6: Final answer
   x = 20,165.68