Finding the Fourth Proportional to 7,102.69, 10,645.90 and 3,984.12

Step by Step Solution

1. Step 1: Write the proportion equation
   7,102.69 : 10,645.90 = 3,984.12 : x
2. Step 2: Convert to fraction form
   7,102.69/10,645.90 = 3,984.12/x
3. Step 3: Cross multiply
   7,102.69x = 10,645.90 × 3,984.12
4. Step 4: Simplify right side
   7,102.69x = 42,414,533.15
5. Step 5: Solve for x
   x = 42,414,533.15/7,102.69
6. Step 6: Final answer
   x = 5,971.62