Finding the Fourth Proportional to 10,785.89, 16,155.45 and 5,227.58

Step by Step Solution

1. Step 1: Write the proportion equation
   10,785.89 : 16,155.45 = 5,227.58 : x
2. Step 2: Convert to fraction form
   10,785.89/16,155.45 = 5,227.58/x
3. Step 3: Cross multiply
   10,785.89x = 16,155.45 × 5,227.58
4. Step 4: Simplify right side
   10,785.89x = 84,453,907.31
5. Step 5: Solve for x
   x = 84,453,907.31/10,785.89
6. Step 6: Final answer
   x = 7,830.04