Finding the Fourth Proportional to 38,390.58, 57,588.63 and 13,427.82

Step by Step Solution

1. Step 1: Write the proportion equation
   38,390.58 : 57,588.63 = 13,427.82 : x
2. Step 2: Convert to fraction form
   38,390.58/57,588.63 = 13,427.82/x
3. Step 3: Cross multiply
   38,390.58x = 57,588.63 × 13,427.82
4. Step 4: Simplify right side
   38,390.58x = 773,289,757.69
5. Step 5: Solve for x
   x = 773,289,757.69/38,390.58
6. Step 6: Final answer
   x = 20,142.70