Finding the Fourth Proportional to 43,058.76, 64,595.34 and 13,470.72

Step by Step Solution

1. Step 1: Write the proportion equation
   43,058.76 : 64,595.34 = 13,470.72 : x
2. Step 2: Convert to fraction form
   43,058.76/64,595.34 = 13,470.72/x
3. Step 3: Cross multiply
   43,058.76x = 64,595.34 × 13,470.72
4. Step 4: Simplify right side
   43,058.76x = 870,145,738.44
5. Step 5: Solve for x
   x = 870,145,738.44/43,058.76
6. Step 6: Final answer
   x = 20,208.33