Finding the Fourth Proportional to 43,064.76, 64,604.34 and 13,476.72

Step by Step Solution

1. Step 1: Write the proportion equation
   43,064.76 : 64,604.34 = 13,476.72 : x
2. Step 2: Convert to fraction form
   43,064.76/64,604.34 = 13,476.72/x
3. Step 3: Cross multiply
   43,064.76x = 64,604.34 × 13,476.72
4. Step 4: Simplify right side
   43,064.76x = 870,654,600.96
5. Step 5: Solve for x
   x = 870,654,600.96/43,064.76
6. Step 6: Final answer
   x = 20,217.33