Finding the Fourth Proportional to 13,185.59, 19,783.25 and 6,945.35

Step by Step Solution

1. Step 1: Write the proportion equation
   13,185.59 : 19,783.25 = 6,945.35 : x
2. Step 2: Convert to fraction form
   13,185.59/19,783.25 = 6,945.35/x
3. Step 3: Cross multiply
   13,185.59x = 19,783.25 × 6,945.35
4. Step 4: Simplify right side
   13,185.59x = 137,401,595.39
5. Step 5: Solve for x
   x = 137,401,595.39/13,185.59
6. Step 6: Final answer
   x = 10,420.59