Finding the Fourth Proportional to 43,127.15, 64,693.47 and 13,546.15

Step by Step Solution

1. Step 1: Write the proportion equation
   43,127.15 : 64,693.47 = 13,546.15 : x
2. Step 2: Convert to fraction form
   43,127.15/64,693.47 = 13,546.15/x
3. Step 3: Cross multiply
   43,127.15x = 64,693.47 × 13,546.15
4. Step 4: Simplify right side
   43,127.15x = 876,347,448.64
5. Step 5: Solve for x
   x = 876,347,448.64/43,127.15
6. Step 6: Final answer
   x = 20,320.09