Finding the Fourth Proportional to 7,045.86, 9,723.15 and 3,902.07

Step by Step Solution

1. Step 1: Write the proportion equation
   7,045.86 : 9,723.15 = 3,902.07 : x
2. Step 2: Convert to fraction form
   7,045.86/9,723.15 = 3,902.07/x
3. Step 3: Cross multiply
   7,045.86x = 9,723.15 × 3,902.07
4. Step 4: Simplify right side
   7,045.86x = 37,940,411.92
5. Step 5: Solve for x
   x = 37,940,411.92/7,045.86
6. Step 6: Final answer
   x = 5,384.78