Finding the Fourth Proportional to 13,065.97, 19,599.70 and 3,705.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,065.97 : 19,599.70 = 3,705.25 : x
2. Step 2: Convert to fraction form
   13,065.97/19,599.70 = 3,705.25/x
3. Step 3: Cross multiply
   13,065.97x = 19,599.70 × 3,705.25
4. Step 4: Simplify right side
   13,065.97x = 72,621,788.43
5. Step 5: Solve for x
   x = 72,621,788.43/13,065.97
6. Step 6: Final answer
   x = 5,558.09