Finding the Fourth Proportional to 9,943.68, 13,720.76 and 5,751.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,943.68 : 13,720.76 = 5,751.12 : x
2. Step 2: Convert to fraction form
   9,943.68/13,720.76 = 5,751.12/x
3. Step 3: Cross multiply
   9,943.68x = 13,720.76 × 5,751.12
4. Step 4: Simplify right side
   9,943.68x = 78,909,737.25
5. Step 5: Solve for x
   x = 78,909,737.25/9,943.68
6. Step 6: Final answer
   x = 7,935.67