Finding the Fourth Proportional to 7,864.41, 10,853.94 and 7,200.07

Step by Step Solution

1. Step 1: Write the proportion equation
   7,864.41 : 10,853.94 = 7,200.07 : x
2. Step 2: Convert to fraction form
   7,864.41/10,853.94 = 7,200.07/x
3. Step 3: Cross multiply
   7,864.41x = 10,853.94 × 7,200.07
4. Step 4: Simplify right side
   7,864.41x = 78,149,127.78
5. Step 5: Solve for x
   x = 78,149,127.78/7,864.41
6. Step 6: Final answer
   x = 9,937.06