Finding the Fourth Proportional to 37,087.20, 55,648.08 and 13,404.42

Step by Step Solution

1. Step 1: Write the proportion equation
   37,087.20 : 55,648.08 = 13,404.42 : x
2. Step 2: Convert to fraction form
   37,087.20/55,648.08 = 13,404.42/x
3. Step 3: Cross multiply
   37,087.20x = 55,648.08 × 13,404.42
4. Step 4: Simplify right side
   37,087.20x = 745,930,236.51
5. Step 5: Solve for x
   x = 745,930,236.51/37,087.20
6. Step 6: Final answer
   x = 20,112.88