Finding the Fourth Proportional to 10,785.20, 16,184.71 and 5,235.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,785.20 : 16,184.71 = 5,235.52 : x
2. Step 2: Convert to fraction form
   10,785.20/16,184.71 = 5,235.52/x
3. Step 3: Cross multiply
   10,785.20x = 16,184.71 × 5,235.52
4. Step 4: Simplify right side
   10,785.20x = 84,735,319.35
5. Step 5: Solve for x
   x = 84,735,319.35/10,785.20
6. Step 6: Final answer
   x = 7,856.63