Finding the Fourth Proportional to 37,084.72, 55,638.96 and 13,391.68

Step by Step Solution

1. Step 1: Write the proportion equation
   37,084.72 : 55,638.96 = 13,391.68 : x
2. Step 2: Convert to fraction form
   37,084.72/55,638.96 = 13,391.68/x
3. Step 3: Cross multiply
   37,084.72x = 55,638.96 × 13,391.68
4. Step 4: Simplify right side
   37,084.72x = 745,099,147.85
5. Step 5: Solve for x
   x = 745,099,147.85/37,084.72
6. Step 6: Final answer
   x = 20,091.81