Finding the Fourth Proportional to 43,320.27, 64,982.71 and 13,740.38

Step by Step Solution

1. Step 1: Write the proportion equation
   43,320.27 : 64,982.71 = 13,740.38 : x
2. Step 2: Convert to fraction form
   43,320.27/64,982.71 = 13,740.38/x
3. Step 3: Cross multiply
   43,320.27x = 64,982.71 × 13,740.38
4. Step 4: Simplify right side
   43,320.27x = 892,887,468.95
5. Step 5: Solve for x
   x = 892,887,468.95/43,320.27
6. Step 6: Final answer
   x = 20,611.31