Finding the Fourth Proportional to 7,007.86, 9,670.39 and 3,864.05

Step by Step Solution

1. Step 1: Write the proportion equation
   7,007.86 : 9,670.39 = 3,864.05 : x
2. Step 2: Convert to fraction form
   7,007.86/9,670.39 = 3,864.05/x
3. Step 3: Cross multiply
   7,007.86x = 9,670.39 × 3,864.05
4. Step 4: Simplify right side
   7,007.86x = 37,366,870.48
5. Step 5: Solve for x
   x = 37,366,870.48/7,007.86
6. Step 6: Final answer
   x = 5,332.14