Finding the Fourth Proportional to 7,002.86, 10,505.91 and 3,107.57

Step by Step Solution

1. Step 1: Write the proportion equation
   7,002.86 : 10,505.91 = 3,107.57 : x
2. Step 2: Convert to fraction form
   7,002.86/10,505.91 = 3,107.57/x
3. Step 3: Cross multiply
   7,002.86x = 10,505.91 × 3,107.57
4. Step 4: Simplify right side
   7,002.86x = 32,647,850.74
5. Step 5: Solve for x
   x = 32,647,850.74/7,002.86
6. Step 6: Final answer
   x = 4,662.07