Finding the Fourth Proportional to 7,007.78, 9,670.71 and 3,864.14

Step by Step Solution

1. Step 1: Write the proportion equation
   7,007.78 : 9,670.71 = 3,864.14 : x
2. Step 2: Convert to fraction form
   7,007.78/9,670.71 = 3,864.14/x
3. Step 3: Cross multiply
   7,007.78x = 9,670.71 × 3,864.14
4. Step 4: Simplify right side
   7,007.78x = 37,368,977.34
5. Step 5: Solve for x
   x = 37,368,977.34/7,007.78
6. Step 6: Final answer
   x = 5,332.50