Finding the Fourth Proportional to 13,193.72, 19,788.90 and 3,706.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,193.72 : 19,788.90 = 3,706.89 : x
2. Step 2: Convert to fraction form
   13,193.72/19,788.90 = 3,706.89/x
3. Step 3: Cross multiply
   13,193.72x = 19,788.90 × 3,706.89
4. Step 4: Simplify right side
   13,193.72x = 73,355,275.52
5. Step 5: Solve for x
   x = 73,355,275.52/13,193.72
6. Step 6: Final answer
   x = 5,559.86