Finding the Fourth Proportional to 7,815.37, 10,784.83 and 4,278.61

Step by Step Solution

1. Step 1: Write the proportion equation
   7,815.37 : 10,784.83 = 4,278.61 : x
2. Step 2: Convert to fraction form
   7,815.37/10,784.83 = 4,278.61/x
3. Step 3: Cross multiply
   7,815.37x = 10,784.83 × 4,278.61
4. Step 4: Simplify right side
   7,815.37x = 46,144,081.49
5. Step 5: Solve for x
   x = 46,144,081.49/7,815.37
6. Step 6: Final answer
   x = 5,904.27