Finding the Fourth Proportional to 43,488.05, 65,236.17 and 13,898.86

Step by Step Solution

1. Step 1: Write the proportion equation
   43,488.05 : 65,236.17 = 13,898.86 : x
2. Step 2: Convert to fraction form
   43,488.05/65,236.17 = 13,898.86/x
3. Step 3: Cross multiply
   43,488.05x = 65,236.17 × 13,898.86
4. Step 4: Simplify right side
   43,488.05x = 906,708,067.59
5. Step 5: Solve for x
   x = 906,708,067.59/43,488.05
6. Step 6: Final answer
   x = 20,849.59