Finding the Fourth Proportional to 9,942.28, 13,720.74 and 5,694.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,942.28 : 13,720.74 = 5,694.04 : x
2. Step 2: Convert to fraction form
   9,942.28/13,720.74 = 5,694.04/x
3. Step 3: Cross multiply
   9,942.28x = 13,720.74 × 5,694.04
4. Step 4: Simplify right side
   9,942.28x = 78,126,442.39
5. Step 5: Solve for x
   x = 78,126,442.39/9,942.28
6. Step 6: Final answer
   x = 7,858.00