Finding the Fourth Proportional to 9,943.80, 13,724.99 and 5,696.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,943.80 : 13,724.99 = 5,696.25 : x
2. Step 2: Convert to fraction form
   9,943.80/13,724.99 = 5,696.25/x
3. Step 3: Cross multiply
   9,943.80x = 13,724.99 × 5,696.25
4. Step 4: Simplify right side
   9,943.80x = 78,180,945.81
5. Step 5: Solve for x
   x = 78,180,945.81/9,943.80
6. Step 6: Final answer
   x = 7,862.28